Shampoo and the conditioner in one bottle photohardware video seriously, holding the opinion for a photo is cameras, and for video - videocameras. This opinion has the bases as on quality of video and some other parameters the best on videofunctions the digital camera obviously concedes even the most inexpensive miniDV-videokamere.
On the other hand, not all are ready to carry with itself a videocamera as the separate device, in this case compactness is essential plus which can move more poor quality of video and the limited opportunities of processing of the finished shooting material. Besides the videocamera, unlike more compact camera, not always can be near at hand, in this case "photohardware" video will help to not miss an interesting videoplot
Fotovideo-or a videocamera? In the majority of cameras of video it is positioned as additional function, the basic function of these devices there is a photographing about what hp nc 6000 notebook speaks their photohardware design. Exception make, perhaps, only photovideocameras Sanyo Xacti C1/C4/C and Pentax Optio MX/MX as their form is intended first of all for shooting video (Pentax, the truth, not blesch'et by quality of a sound - 80 Hz mono), thus they provide photographing at a level of averages cifromy'l'nic. Probably, these devices would be more correct to name videocameras as for them it is possible to consider shooting of video the basic function (for example, Sanyo positions Xacti C1/C4/C as videocameras with an opportunity of a photo).
At a choice of a photovideocamera it is necessary to pay attention on form-faktor of the device - the classical camera is less convenient for shooting video, than the device of "videochamber" type, especially if to hold its one hand and to remove long rollers.
Formats of photohardware videoclips Digital video is characterized by several key parameters - the size of the staff, frequency of the staff (Frames hp nc 6000 notebook Per Second, FPS), bitreytom, type of development and a format of coding. About these parameters it is possible to read through in detail here:) to receive high quality at viewing on the TV, at least, it is necessary, that the size of the staff and frequency of the staff corresponded to one of the widespread television standards. In photovideocameras it is meaningful to consider video not below 640h480, kadrov/sek., that corresponds to television standard NTSC. Television standard PAL (5 lines, kadrov/sek) yet has not received distribution in MPEG- photovideocameras.
The note: it is necessary to note, that besides the size of the staff and frequency of the staff quality of video depends as well from bitreyta, a format of coding, type and the size of a matrix, optical system and of some other parameters. MPEG- or Motion JPEG first of all it is necessary to be defined, whether support MPEG- in the camera is necessary to you, or will be MJPEG 640h480, kadrov/sek enough.
Basic difference MPEG- from MJPEG is hp nc 6000 notebook presence of the interpersonnel compression allowing in some times to lower the size of a final file at insignificant decrease of quality (about an hour of video on 1Gb a card). However a underside of a medal is dependence of quality or bitreyta from dynamism of a stage. The matter is that on dynamical stages the next staff differ from each other more strongly, therefore for coding the next staff it is necessary more byte, or decrease in quality is inevitable. Computer MPEG- codecs (for example, DivX or XviD) "are able" to change bitreyt at coding video, increasing it on dynamical stages for maintenance of the set degree of quality (thus, on fast stages bitreyt can increase in some times). MPEG- photovideocameras are unable to change bitreyt in such wide limits, therefore they fulfil static stages is better is it is necessary to consider at shooting. Also in photovideocameras the hp nc 6000 notebook simplified algorithms of coding that leads more to poor quality are used.
Quality Motion JPEG video does not depend on dynamism of a stage, however a payment for it is in some times greater size of final rollers. On the other hand, Motion JPEG is more convenient for the subsequent installation of video as the staff do not depend from each other, it is possible vy'rezat'/vstavlyat' fragments, since any staff.
Thus, MPEG- it is more preferable to longer video shooting, especially if for processing the finished shooting material there are enough operations of linear installation, in this case it is possible to receive quickly enough MPEG- CD, suitable for viewing on any DVD-MPEG a player.
The note: Not so long ago began to appear compact MPEG- the photovideocameras which are writing down video on CF MicroDrive. Possibly, such chambers will allow to create ready DVD without hp nc 6000 notebook code conversion of video, however while they are dear enough and not numerous. DVD-kamery', removing at once on the video disk, at all do not assume any change of a material. The container Type of the container (storehouse of data) is defined by expansion of a file of a videoclip. In cameras types MP4, MOV, AVI or MPG MP - the container stipulated by standard MPEG- are used. This container assumes use MPEG ASP/AVC for coding video and format AAC (Advanced Audio Coding) for coding audio. Format AAC also has some levels (profiles) - AAC LC (Low Complexity) and more "advanced" HE (High Efficiency) AAC. In photovideocameras it is used AAC LC, at least, not conceding on quality to popular audioformat MP3.
It is necessary to differentiate a format of compression of video MPEG- and type of container MP - them often confuse. hp nc 6000 notebook MPEG- video can be in any their considered containers - MP4, MOV or AVI while container MP provides only MPEG- video.
Container MOV is connected by historical roots with program QuickTime, it is frequent with it associiruyut.
Sometimes it is possible to hear the formulation of video in format QuickTime is not absolutely correctly as in container MOV can be both Motion JPEG, and MPEG- video (and also set of other formats). Besides QuickTime - not unique alternative of work with MOV-rolikami. Examples MPEG- of photovideocameras with MOV-rolikami - Pentax Optio MX/MX (a sound in format PCM), Samsung V50/ (a sound in a format u-Law).
AVI (Audio and Video Interleaved) - less "advanced", however much more widespread container. It understand the majority of programs of video-tape editing and all DVD-MPEG players that it is impossible to tell hp nc 6000 notebook about containers MP and MOV.
In a number of cameras Sony (L1, P73, P93, P150, T3, W1) the format of compression of video MPEG- and container MPG corresponding it is used. This format is used in VideoCD, it understand majority DVD-proigry'vateley. However firm Sony uses own updating a format - MPEG VX, incompatible with standard MPEG-1.
The table. Cameras with an opportunity of videorecording 640h480, kadrov/sek the Format of video (bitreyt)/konteyner
Motion JPEG (8- Mbit/sek) MPEG- ASP (2- Mbit/sek) MP - Sanyo Xacti C1/C4/C5, Olympus C-7 Movie, Sony DSC-M MOV Minolta DiMAGE A2/A200/Z3/Z5, NikonCoolpix5200/7600/8400/8800, Olympus C7000/C7070, Pentax Optio 43WR Pentax Optio MX/MX4, Samsung V50/ AVI Canon PowerShot S IS, Canon IXUS /700, Fujitsu FinePix E550/S7000/S5100, Pentax Optio 750Z Casio EX P505/Z750/S500, Pentax Optio s5n/s5z, Samsung V700/U-CA the Note: Some models Kodak EasyShare use format MPEG- Simple Profile (H.263), it provides a smaller degree of compression, than hp nc 6000 notebook MPEG- ASP and is incompatible with majority DVD-MPEG4-pleyerov. Installation of additional codecs, as a rule, is necessary For viewing H.2 on a computer. We do not consider in detail MPEG VX and H.2 in "photohardware" video owing to their limited compatibility. The format of audio the Format of audio is important parameter as poor quality of a sound can sometimes bring to nothing a good videoplot. In specifications manufacturers sometimes do not specify it, or specify not completely.
The table. A format of audio in popular MPEG- photovideocameras of Model of chambers the Format of audio Bitreyt, Kbit/sek Frequency of digitization, Hz Mono/Stereo SanyoXactiC1/C4/C5, Olympus C-7 Movie* AAC LC Stereos Sony DSC-M AAC LC Stereos Pentax Optio MX/MX PCM bit 1 80 Mono Samsung V50/ u-Law 80 Mono Samsung V700/U-CA Mpeg- Layer Mono Casio EX-P5 ADPCM Stereos Casio EX-Z750/S5 ADPCM Mono the Note: * Built in microphone Olympus C-7 Movie monophonic, therefore for stereorecord Quality of a sound is necessary to connect an external microphone is defined hp nc 6000 notebook not only nameplate data, it is necessary to consider also quality of the built in microphone and its arrangement. As a whole, at the majority of photovideocameras of audio is at a level comprehensible to amateur shooting. Exception chambers with a sound make of 80 Hz (Pentax Optio MX/MX4, Samsung V40/50, some cameras with MJPEG video), at such frequency of digitization quality of a sound will be up to standard of an analog telephone line.
Processing of photohardware videorecordings Unlike photos, photohardware videoclips in any case are necessary for processing, as in a crude kind they are inconvenient for viewing - each fragment is presented by a separate file, and, these files not always open on a computer without installation of additional codecs. At import of videoclips the program of video-tape editing too there can be problems - many of them are not able to work with containers MP and MOV.
To look photohardware MPEG- video on DVD-MPEG a player too, most likely, it will not turn out - the majority of them does not reproduce such videoclips, or reproduces them without a sound
Many DVD-MPEG players reproduce MPEG- video only in container AVI hp nc 6000 notebook and "do not understand" MP and MOV;
MPEG- AVI rollers of photovideocameras Casio EX-P505/Z750/S5 are incompatible with popular MPEG- codecs DivX/XviD (because of some features of heading), and majority DVD-MPEG of players is calculated on support of these codecs;
In photovideochamber rollers various audioformats are used (PCM, ADPCM, AAC, u-Law), majority DVD-MPEG of players "does not see" such sound, it is desirable to recode in clear it format MP3;
MPEG- CD or DVD Video? To consider MPEG- CD as a final format it is meaningful only at processing MPEG- of videoclips as in this case it is possible to avoid long procedure of code conversion of video (code conversion in MPEG- hour film borrows 1- hours). Process of creation MPEG- CD without code conversion of video gives a few opportunities for creativity - it is possible to add subtitles in a separate file .SRT and the second sound track with comments or music underneath, linear installation on the key staff - with accuracy 0. sek is possible at GOP=15.
Credits, transitions and various videoeffects at linear installation are inaccessible, as it is impossible to make changes to a picture. Besides MPEG- CD does not allow to create the menu with a choice hp nc 6000 notebook of episodes.
The basic advantage of such approach is speed of processing of a material - MPEG- CD can be made for 10- minutes and at once to look on DVD-MPEG a player, or to place in house archive. One more advantage MPEG- - the small sizes of files that allows to store some hours of finished shooting video on noutbuke or a house computer.
Format DVD-Video gives more opportunities for creativity. Here opportunities of nonlinear installation are accessible to us all - transitions, credits, videoeffects, etc. Many programs of installation allow to export the project at once on DVD, and also contain a set of the ready patterns allowing quickly to create the menu of a disk (for example, Ulead Video Studio, going complete with some photovideocameras). At code conversion MJPEG or MPEG- in MPEG- c maximal bitreytom ( Mbit/sek) losses of quality will be minimal, the basic lack of such code conversion - greater expenses of time.
If you need to recode only video in MPEG- and to write down it hp nc 6000 notebook on DVD instead of programs of installation it is possible to take advantage of more simple programmami-perekodirovsch'ikami, for example, free-of-charge.
Perepakovka in container AVI the Problem of incompatibility of photohardware videoclips with DVD-MPEG players and programs of installation can be solved by means of the free-of-charge program created specially for these purposes. Process of creation MPEG- CD by means of this program is in detail described in clause. In the elementary case, at absence of installation, it is possible to create 40-minutny'y MPEG- CD for 10- minutes, from them 5- minutes is required on assembly and processing in MP4Cam2AVI, minutes - on record of a disk. For linear installation and addition of the second sound track it is possible to use the free-of-charge program, for addition of subtitles - the program, too free-of-charge. MP4Cam2AVI will help and at processing MOV MJPEG of videoclips - perepakovka in container AVI will make their hp nc 6000 notebook clear to any editor of video. The program does not demand installation QuickTime and any codecs for correct work. Skachat' the current version of the program it is possible.
Important points and "reefs" there Is a set of the important parameters to which it is necessary to pay attention if you are measured to use videofunctions of the camera, and, many of them are not specified in technical specifications Work of an auto focus the Mechanism of autofocusing at cameras always works more slowly, than for videocameras as from it greater accuracy is required. To estimate speed of work of an auto focus it is possible, sharply having translated the chamber from near object on distant and on the contrary. Sometimes the built in microphone can catch noise of the mechanism of an auto focus, especially in a silent environment.
Many photovideocameras have an opportunity of switching-off of an auto focus (for example, " hp nc 6000 notebook autofocus lock " at Sanyo C1). At the switched off auto focus the chamber turns out absolutely silent.
It is necessary to pay attention also to work of an auto focus at use of an optical zoom - in some photovideocameras the optical zoom forces down adjustment of an auto focus, and some seconds on its fine tuning Work of a zoom during shooting In many cameras can be demanded is present both optical, and a digital zoom, however not always it is possible to use them at shooting video. Here variants are possible:
At shooting video the optical zoom works both digital, and
The zoom does not work during shooting, however it is possible to expose it on the necessary position before the beginning of shooting;
The note: It is not necessary to give great value of frequency rate of a zoom - for shooting from hands 3- multiple zooms more than enough, at greater frequency rate and shooting without a support are inevitable strong podragivaniya pictures. It is necessary to tell some words " in protection " a digital zoom in photovideocameras. If at photographing the digital zoom is cleanly marketing course as the sanction of a hp nc 6000 notebook picture at a video shooting such chamber this function can be useful if it is fairly realized catastrophically falls. The matter is that the photohardware matrix has the sanction much greater, than it is necessary for a video shooting. Therefore, in spite of the fact that at a digital zoom for reading the staff the part of the area of a matrix is used only, it it appears enough to provide the necessary sanction for the videostaff 640x480. Certainly, because of the smaller useful area of a matrix noise, but nevertheless such digital zoom noticeably increase is better, than anything. Digital Zoom vy'klyuche
The sanction of a matrix is more than sanction of the staff Stabilization of the image Presence of this function allows to eliminate somewhat trembling of a picture at shooting video from hands.
Photosensitivity of a matrix the Important parameter both for foto-, and for a video shooting. It is defined by the physical size of a matrix - the it less, the is worse the matrix will see at insufficient illumination, photos or videorecording (see clause) will be especially noisy
The hp nc 6000 notebook balance white Autobalance white not always well works at shooting video, besides in cameras it can be slow enough. As a rule, there are some ready structures - "sunny day", "is cloudy", " galogennaya a lamp ", " a lamp nakalivaniya ", etc., however this set often does not suffice.
The optimum variant is a presence of balance white " on a leaf ", in this case you can receive plausible colors at any type of illumination.
Testing of a videomode of popular photovideocameras To us on testing eight photovideocameras with record of video MPEG ASP have got:
Sanyo Xacti C1, Sanyo Xacti C5, Olympus C770, Samsung V70, Samsung V700, Sony DSC-M1, Casio EX P5 and Casio EX Z750.
Firm Sanyo of the first has entered into a market MPEG photovideocameras, then one for another other firms have started to join, Casio has presented the devices of last. In such order we also shall consider them. hp nc 6000 notebook Unfortunately, it was not possible to find any model Pentax also making similar chambers.
As photographic opportunities of these chambers were already in detail considered, including on , we shall exclusively speak about videofunctions, and we shall consider only modes 640x4 30fps.
Sanyo Xacti C and Sanyo C - the first MPEG ASP the photovideocamera which has appeared on Russian market. Form-faktor - classical "videochamber". The matrix at the chamber the smallest of considered - 1/2.7”, an objective with 5.8x Zoom (38-2 in 35mm an equivalent), is not present the stabilizer of the image. Photographic opportunities - at a level inexpensive cifromy'l'nicy' - megapixels and a minimum of manual adjustments, at the lowered light exposure pictures noisy enough. And here videoopportunities at Sanyo Xacti C very quite good even on a background of some younger competitors. The chamber writes down video MPEG with GOP in container MP4, for 640x4 fps there are adjustments of quality - TV-HQ (2Mbps) and TV-SHQ (3Mbps). Sound AAC LC 48kHz enters the name from hp nc 6000 notebook a stereomicrophone located on a underside of the folding display. During a video shooting works both optical, and digital Zoom. At work optical Zoom-a focusing of an objective essentially gets off, especially at shooting near objects, some seconds on fine tuning of an auto focus sometimes leave. If you do not use a zoom during shooting, the auto focus can be disconnected (function AF-Lock), in this case the chamber becomes absolutely silent.
The microphone of high quality which is sensitive enough. It perfectly writes down not only a voice, but also all extraneous noise - noise of a wind, noise of work of mechanisms Zoom-a and an auto focus. If the auto focus can be disconnected, it is necessary to reconcile to record of "voice" Zoom-a.
Perhaps, the microphone is unduly sensitive in high-frequency area because of what some sounds turn out very "rigid" (for example, noise of water). Program processing by the filter of the bottom frequencies allows to make a sound softer and hp nc 6000 notebook natural.
The balance white on a leaf at Sanyo Xacti C1, unfortunately, is not present. The built in structures a lamp nakalivaniya and galogennaya a lamp often do not provide a good colour rendition at shooting in, and white significant time (10- seconds) is required to autobalance to estimate conditions and to be arranged to conditions of illumination.
The stabilizer of the image is absent, that for the chamber with equivalent 220mm on long end Zoom-a is essential lack.
The chamber is capable to change in small limits bitreyt, reducing it on stages with small quantity of movement and giving a stock on more complex episodes (within the limits of one videoclip, certainly). The parity of the size key and del'ta-kadrov varies depending on complexity of a stage and a mode of quality.
As a data carrier in Sanyo Xacti C uses cards of memory SD in volume up to 1Gb. Pyatimegapiksel'naya Sanyo Xacti C is at all "daughter", and "grand daughter" Sanyo Xacti C - between them has had time to leave C4, differing from C presence of the digital stabilizer of the image hp nc 6000 notebook and 4-megapiksel'noy a matrix. In the rest including externally, Sanyo C it is very similar on Sanyo C1.
Let's pass to Sanyo Xacti C5. The chamber has the same videomodes - TV-HQ (2Mbps) and TV-SHQ (3Mbps). On quality of video between C and S we have not found out appreciable differences. Similar, electronic stuffing of the chamber, especially regarding coding video, has not undergone essential changes - the chamber keeps videoclips in container MP4, GOP 15, sound AAC LC 1 Kbps a stereo.
The design of the chamber has changed first of all - it became noticeably less and is more thin, therefore people with greater hands are sometimes compelled to use original "hvat" when the chamber is clamped in the form of "fig" between index and average fingers. It is good, that it is enough for management of the big finger - "videochamber" form-faktor has the advantages and in such conditions.
Despite of reduction of the sizes of the chamber, it has received the display a little bit greater, than at predecessors, the size of a matrix has a little increased also - hp nc 6000 notebook it became 1/2.5” (though for megapiksel'nogo the camera of it, certainly, a little). And here for old optics of a place was not any more - objective Xacti C noticeably less in diameter. In view of that the younger model from Sanyo with wider objective and a close matrix on the size 1/2.7” noticeably rustles at shooting in, hardly it is necessary to expect from C the best behaviour in such conditions are chambers first of all for street shooting.
At a new objective not only has decreased Zoom - here it 5x (38-1 mm in mm an equivalent), but also distortions have a little increased. Bochkoobrazny'e distortions on shirokougol'nom the end became noticeably more. On subjective sensations, speed of work of an auto focus at S and S identical, is observed the same lack - at use of a zoom sharpness "gets off", especially at shooting near objects. Inclusion hp nc 6000 notebook of a dot mode of focusing noticeably accelerates work of an auto focus (at Sanyo Xacti C such mode is not present).
There are some the positive changes, concerning an electronic stuffing of the chamber - here engineers Sanyo have made quite good " work above mistakes ".
First, there was an opportunity of installation of balance white " on a leaf " - very useful function at shooting in as typical installations often do not provide a satisfactory colour rendition, and the autobalance white works too slowly.
Secondly, there was a digital stabilizer of the image with two modes - (A) and (B). The stabilizer works only at shooting video, at the included stabilizer for formation of the staff the part of a matrix and an equivalent focal length is used only increases. In a mode (A) on the display of the chamber the smaller part of a matrix corresponding the videostaff hp nc 6000 notebook is displayed. The photos made in this mode, the a little bit greater corner of the review, than a picture on the display of the chamber will have. In a mode (B) the display of the chamber shows a matrix entirely, and the area of formation of the videostaff is outlined by white lines. The mode (B) is convenient for simultaneous foto-and video shootings, the mode (A) is more preferable in the event that you remove only video.
The stabilizer well enough eliminates podragivaniya pictures at shooting from hands - even at shooting by one hand on " the distant end " optical Zoom-a, thus appreciable "zamy'livaniya" images do not occur (unlike Samsung V7 which we shall mention hardly below). It is necessary to remember, that inclusion of the stabilizer reduces the effective size of a matrix that leads to additional growth of noise, therefore at insufficient illumination the stabilizer can be disconnected.
Thirdly, quality of a sound has improved - hp nc 6000 notebook the frequency characteristic of the built in stereomicrophone became more linear, the peak in high-frequency area so extraneous noise now not so are persuasive has disappeared, the sound became softer. Nevertheless, it is not ideal - there is no study of the bottom frequencies.
There was an interesting option - " suppression of noise of a wind ". Certainly, at its inclusion noise does not suppress completely, but, at least, human speech becomes more legible.
Unfortunately, firm Sanyo does not consider sale of a photo and video equipment as a priority direction in Russia, therefore the prices on Sanyo Xacti C and in Sanyo C is appreciable above "schoolmates". Sanyo C in general the most dear among photovideocameras offered in market MPEG4, including is more dear semimegapiksel'nikov with 1/1.8” matrix. But the unique combination of a photo and videoopportunities (let and not outstanding by their consideration separately) in the certain conditions do purchase of chambers Sanyo C1/C4/C practically uncontested, though also rather dear choice.
Olympus C-7 Movie Olympus became the second firm which has let out MPEG ASP hp nc 6000 notebook a photovideocamera. Here already more than year is made unique while model.
Form-faktor at it "photohardware" so at a video shooting the chamber not so is convenient as chambers Sanyo. The matrix at it too small - 1/2.5”, an objective with 10x Zoom (38-3 mm in 35mm an equivalent), is available an opportunity of installation of balance white " on a leaf ". Neither digital, nor the optical stabilizer is not present, that for the chamber with a ultrazoom is serious lack.
Video MPEG with GOP and bitreytom 2Mbps is kept in container MP4. Except for MPEG4, the chamber is able to remove and MJPEG videoclips (container MOV), the truth, here the best mode 640x4 - only fps.
Videoclips are kept with binaural sound AAC LC 48kHz, during shooting the optical zoom is accessible, but … simultaneously to use an optical zoom and to write down a binaural sound, connection of an external microphone is necessary. - monophonic, at absence of an external microphone it is necessary to choose the built in microphone - either an optical zoom, or record of a sound. In a hp nc 6000 notebook mode with a sound the digital zoom is accessible only.
As we have mentioned above, at the sanction of a matrix there is more than sanction of the staff, digital Zoom at "fair" algorithm of work basically is capable to provide comprehensible quality of the image. Olympus C-7 - unique from the chambers tested by us with "fair" realization of a digital zoom. It is visible, that at use digital Zoom-a on the image become razlichimy' fineer details though shumnost' images increases as the effective size of a matrix becomes less.
The auto focus of the chamber quickly enough reacts to change of the plan, and here at use of an optical zoom on its fine tuning some seconds can leave.
In stages with small quantity of movement the parity of the size key and del'ta-kadrov is more, than at other considered chambers. Owing to it, quality at shooting quiet episodes - the best among chambers with 2Mbps (though, certainly, worse, than at chambers hp nc 6000 notebook with higher bitreytom). At shooting complex stages a parity of the sizes key and the delta of the staff decreases, and quality of stages with a lot of movement in the staff noticeably falls.
As a data carrier the card of memory xD is used traditional for Olympus. Till recent times such cards cost dearly enough, but recently have sharply fallen in price, having practically made even in the price with cards SD of a format.
However after occurrence xD cards in volume 1Gb it was found out, that Olympus C-7 is not able to work with them. More precisely speaking, on them it is possible to keep photos, video MJPEG and MPEG without a sound, and here at attempt to keep MPEG a videoclip with a sound duration more than seconds arise problems. And in fact for such mode first of all the greater card also is necessary! Technical support Olympus knows about this problem, but its decision (except for the recommendation to not use a card hp nc 6000 notebook of memory more 512MB) cannot offer.
Joins Olympus C-7 long enough, more than seconds (a ultrazoom, all the same), a delay of inclusion of videorecording after pressing descent average. But, nevertheless, considering good photographic opportunities and rather low price, for this veteran it is necessary to pay attention.
Samsung V and Samsung V7 Samsung V - one of the first MPEG ASP chambers, most inexpensive of considered by us. Form-faktor at the chamber "photohardware" - a solid soap tray with the rotary display and big for cifromy'l'nicy' a matrix 1/1.8”. The objective with 3x Zoom-om (38-114mm), is not present the stabilizer of the image.
Video MPEG ASP with GOP is kept in container MOV, but the sound is much worse, than at the others - u-Law 8kHz mono. Videomodes a little, but 640x4 30fps only one - 2Mbps. hp nc 6000 notebook Algorithm of work MPEG ASP of the codec, apparently, weakest of chambers considered by us. Anyway, quality of video, perhaps, the lowest among them. After moving the chamber some time is observed appreciable deficiency bitreyta, therefore a quiet episode noticeably "kvadratit". Satisfactory quality manages to be received only at shooting inactive stages.
There is an opportunity of installation of balance white " on a leaf " and switching-off of an auto focus (inclusion of manual focusing). Neither digital, nor optical Zoom during shooting do not work. At change of the plan the auto focus works noticeably longer, than at other chambers.
Among features of the chamber it is necessary to note ability to work and with cards of memory SD/MMC, and with cards Memory Stick Duo. We shall note, that earlier model Samsung V differs from V only the sanction of a matrix, from the point of view of video they are absolutely identical. Samsung V7 - much newer model. In it engineers Samsung have tried to cure hp nc 6000 notebook illnesses of the progenitrix, so differences rather essential.
Form-faktor has remained to "photoequipment rooms", the chamber has got even more "my'l'nichny'y" a kind. As well as in the progenitrix, greater is used rather 1/1.8” matrix and 3x Zoom (38-114mm).
There was a digital stabilizer of the image. The sound became much better - Mpeg Layer1, 22kHz mono. Instead of MOV in V7 container AVI is used, besides as FourCC it is underlined well-known XviD. As a result of it Samsung V7 is unique of chambers considered in the given review which records generating on DVD-MPEG players without additional processing and come off AVI editors without any problems.
Bitreyt has remained practically same - nearby 2Mbps, however, apparently, algorithm of work of the codec here more perfect so quality of video became better, than at Samsung V70. Anyway, such quantity of "squares" at transition from complex to a simple stage is not present. Value GOP is reduced up to 10, hp nc 6000 notebook that allows to cut out more precisely fragments at installation, however bitreyt thus is spent less economically
It would seem, fine work above mistakes if not one but - at moving the chamber are observed appreciable zamiraniya pictures - both in rollers, and on the display. Time-lapse viewing of finished shooting video shows, that periodically (through 5- staff) previous the staff repeats, that is perceived as periodic zamiraniya or jerks. The reason of this phenomenon to us and did not manage to be found out. We observed similar zamiraniya on rollers from three different chambers so hardly it is malfunction of a separate copy. Probably, the processor of the chamber does not cope with processing of a videostream and on complex stages there is "loss" of the staff. However in rollers Samsung U-CA5, equipped by the same processor of losses it is not observed. So, probably problem in an insertion. In any case, on this feature it is necessary to pay special attention.
The auto focus at Samsung V7 works noticeably more quickly, than at Samsung V70. hp nc 6000 notebook Here the same as and the predecessor, has an opportunity to establish balance white " on a leaf ", an auto focus disconnected. Neither digital, nor optical Zoom during a video shooting do not work.
Samsung V7 - one of two chambers considered by us, having the digital stabilizer of the image. Unlike Sanyo C5, at work of the stabilizer occurs appreciable zamy'livanie fine details of the image (it very noticeably, for example, on leaves of trees), but trembling of a picture at shooting from hands is eliminated well. At the stabilizer, as well as at Sanyo C5, all working area of a matrix is used not, thus the minimal equivalent focal length increases.
The considered chambers from Samsung have one general advantage - the price, these are one of the most inexpensive MPEG photovideocameras, besides having it is enough greater for cifromy'l'nic a matrix - 1/1.8”, that is important for photographing. So, if you are not confused hp nc 6000 notebook with the lacks noted above, it is possible to look narrowly at these chambers more in detail.
Sony DSC-M very interesting, unusual photovideocamera, it is complex for classifying at first sight. The chamber is displayed, as a penknife, thus automatically there is its inclusion. To include or switch off it it is possible and it is traditional" - by means of the button. Despite of unusual first impression use a photovideocamera it can to appear conveniently enough, controls are located comfortably, on those places where they are searched with a finger. Though, certainly, on taste and color …
The chamber has a matrix 1/2.4” and an objective with 3x optical Zoom-om (38-1 mm in an equivalent). The objective is located inside of the case vertically and " looks at the world " through prizmu-periskop - such design allows to reduce thickness of the device essentially. Focusing and zummirovanie are not accompanied by visible moving of any elements of an objective.
For a format of video hp nc 6000 notebook which are written down by this chamber, Sony uses the firm name - MPEGMOVIE 4TV, as a matter of fact it is usual MPEG ASP with GOP15. For the sanction 640x4 30fps there is only one degree of quality with bitreytom nearby 2,7Mbps, video is kept in container MP with binaural sound AAC 24kHz, the built in microphone of a stereo.
Opportunities of installation of balance white on a leaf are not present. Optical Zoom during a video shooting it is accessible, can be in addition included digital Zoom, the auto focus at desire can be disconnected (manual installation of the fixed value of focus) is possible. Any problems with focusing neither at zummirovanii, nor at change of the plan it is not observed. Zoom and an auto focus work silently enough, focusing fast.
Quality of a sound at hp nc 6000 notebook Sony DSC-M is better, than at Sanyo Xacti C1. The frequency characteristic of a microphone is well balanced, a sound soft enough and natural, work of own mechanisms practically is not audible. In comparison with Sanyo C - low frequencies are is better worked. From the tested chambers on quality of sound Sony M has liked us most of all, we have found out a binaural sound of similar quality only at Casio P505.
Owing to rather big bitreytu, quality of videorecording good enough, though and not outstanding. A parity of the sizes key and del'ta-kadrov in quiet stages at Sony DSC-M the smallest among the tested chambers. Therefore quiet stages look only not much better, than at the best representatives of chambers with bitreytom 2Mbps, however falling of quality at complication of a stage occurs not so quickly and not so is catastrophic.
Sony DSC-M has interesting enough mode of hybrid shooting which should be mentioned especially. At its inclusion the chamber does a picture and simultaneously removes a short videoclip. Certainly, the experienced user such mode will be hardly demanded hp nc 6000 notebook (among the advanced fans by a good form it is considered to play a trick on this ability Sony), but it can seem to a beginner convenient.
In Sony DSC-M (as however, and in other household and computer technics Sony), cards of memory Memory Stick Duo or Memory Stick Duo PRO by volume up to 1Gb are used. The price of such card considerably above, than at a similar card of memory of format SD. But Sony is Sony, they essentially do not recognize cards of memory of other standards. In the complete set there is an adapter, allowing to use cards Memory Stick Duo in devices with support of cards of memory Memory Stick.
As a whole the chamber, despite of "advanced" age, leaves impression of the sound device of high quality, and for admirers of this wide-profile brand it can appear a successful choice.
Casio EX P5 and Casio EX Z7 Casio last has let out MPEG ASP photovideocameras, and at once two absolutely different models - and.
First we shall mention their general features. Both chambers keep video MPEG ASP with GOP in container AVI, sound ADPCM 44kHz, at Casio EX P5 a stereo, and at Casio hp nc 6000 notebook EX Z7 mono. In spite of the fact that container AVI known many programs of videoediting is used, the heading of a file differs from "standard" a little, besides FourCC is specified "exotic enough" - M4S2. Videoclips are incompatible with popular codecs DivX/XviD and majority DVD-MPEG of players, but they perfectly generating built in in Windows MPEG- codecs Microsoft, or by means of free-of-charge codec FFDShow.
Both chambers are able to keep video with normal quality (bitreyt nearby 2Mbps) and with the maximal quality (bitreyt hardly less 4Mbps). Value 4Mbps is record for this class of chambers, therefore quality their video - the best among devices of the given class. At "normal" quality on complex stages often enough there are "square" artefacts, on quieter stages subjectively in this mode quality too high enough.
In chambers there is hp nc 6000 notebook an opportunity of installation of balance white " on a leaf ", an auto focus it is possible to disconnect, eat an opportunity of manual focusing. Neither digital, nor optical stabilizers of the image, unfortunately, are not present.
Now we shall consider each device more in detail. Looks as a classical ultrazoom, in it the matrix 1/2.5", an objective with 5x Zoom-om is used (38-190mm in 35mm an equivalent), during a video shooting optical Zoom works.
The device joins rather long, more than two seconds, an objective at inclusion, to work Zoom-a and an auto focus does not move.
Despite of long inclusion, process of a video shooting begins practically right after pressing of descent. During shooting it is possible to use both optical, and digital Zoom-om. Digital Zoom it starts to be used only when opportunities optical are completely chosen, for transition to it it is necessary to press repeatedly on kachel'ku hp nc 6000 notebook a zoom lens. Optical Zoom works silently enough, the defocusing at work Zoom-a easily has time to catch small, her auto focus. An auto focus fast enough (especially at inclusion of a mode of dot focusing) and practically silent. On the wide end the objective has enough greater bochkoobrazny'e distortions. Quality of binaural sound Casio EX P5 - one of the best in this class of chambers. The frequency characteristic of a microphone is well balanced, a sound natural enough, subjectively only a little conceding on quality Sony M1. - "notebook" which can be placed in a pocket of a shirt. The matrix here is more - 1/1.8”, but less Zoom - 3x (38-114mm), and during a video shooting to take advantage of it it will not turn out. Bochkoobrazny'e distortions on near end hp nc 6000 notebook Zoom-a - it is subjective at level P505, too are visible "with open years". The digital zoom - "dishonest", its presence is exclusively marketing course, at its use quality of the image catastrophically falls. And in fact sanctions semimegapiksel'noy matrixes would be enough for realization "fair" multiple digital Zoom-a. Unlike Casio EX P505, Z7 joins almost instantly, from pressing the button of inclusion up to availability for service passes less than seconds! The objective is instantly put forward from the thin case and so promptly cleaned on a place at deenergizing the chamber. As a whole it is very fast chamber. The video shooting joins instantly. The auto focus works very quickly and precisely, especially in a mode of dot focusing. In twilight and at artificial illumination owing to a greater matrix noise of videorecording (and a photo too) not so is swept up, how at chambers with a smaller matrix (including Casio P505).
There are some control modes by process of a hp nc 6000 notebook video shooting, including the combined mode of the photo-video shooting similar mentioned at consideration Sony DSC-M1.
As a whole, Casio Z7 it is possible to recognize as one of the most successful photovideocameras of the given class, despite of "absence" of a zoom during shooting and mono a sound. In the conclusion we offer you skachat' some small videoclips.
Video MPEG ASP of all videocameras is shifted in container AVI with FourCC DX without code conversion (that is with initial quality and bitreytom), the sound is recoded in MP so any additional codecs for viewing to establish is not required. Rollers in from till seconds, from 0, up to 2,5MB.
Sanyo C5, normal quality, street from a window, optical Zoom Sanyo C5, the maximal quality, street from a window, Tele, the stabilizer is switched off Sanyo C5, the maximal quality, street from a window, Tele, the stabilizer is included Sanyo C5, the maximal quality, premise Olympus C770, street from a window, optical Zoom Olympus C770, street from a window, digital Zoom Olympus C770, premise Olympus C770, the hp nc 6000 notebook test for the sanction, digital Zoom Olympus C770, the static image, digital Zoom Olympus C770, the static image, optical Zoom Samsung V70, street from a window, Wide Samsung V70, premise Samsung V700, street from a window, Wide Samsung V700, street from a window, Tele Samsung V700, street from a window, Tele, the stabilizer is switched off Samsung V700, street from a window, Tele, the stabilizer is included Samsung V700, premise Sony DSC-M1, street from a window, optical Zoom Sony DSC-M1, premise Casio EX P505, the maximal quality, street from a window, optical Zoom Casio EX P505, The maximal quality, premise, Tele Casio EX Z750, normal quality, street from a window, Wide Casio EX Z750, the maximal quality, street from a window, Wide Casio EX Z750, the maximal quality, street from a window, digital Zoom Casio EX Z750, the maximal quality, the test for the sanction, digital Zoom Casio EX Z750, And also small ( with, Mb) a videoplot " the Trip across Primorski Krai ", removed by photovideocamera Sanyo C in a mode of the maximal quality, perepakovanny'y (without code conversion) in container AVI by means of program MP4Cam2AVI and hp nc 6000 notebook edited (without code conversion of video) by means of VirtualDub the Conclusion summing up, it would be desirable to answer the maximal quality, a premise a question - in what party develop MPEG- photovideocameras and that waits for them in the nearest couple of years. Some tendencies are available. Firm Sanyo has gone on a way of miniaturization of the device, having supplied with its set of new useful functions - the stabilizer of the image, a dot auto focus, balance white on a leaf, suppression of noise of a wind. Unfortunately, in a victim the optics has been brought - the objective became more compact, the appreciable increase in a matrix has not occured, so hardly it is necessary to expect from Sanyo C high quality at insufficient illumination - the chamber is ideal only for street shooting. Nevertheless, the successful combination of the good stabilizer of the image and videochamber form-faktora in some cases does Sanyo C by a unique choice.
Samsung too did not stand on a place - in V7 quite good work above mistakes hp nc 6000 notebook is available, and the matrix has remained the same size - 1/1.8”, that is very quite good for cifromy'l'nicy'. Despite of a number of lacks, the low price does these chambers by a good choice at the limited budget.
Casio, having considered experience of competitors, has let out at once two models - P5 and Z750, both successful enough from the point of view of video, but Z7 due to a greater matrix (1/1.8” against 1/2.5”) "rustles" at insufficient illumination less. In chambers Casio bitreyt it is increased up to record value - 4Mbps, therefore quality their video - the best among MPEG- photovideocameras. At such bitreyte on 7 Mb CD finds room only minutes of video, but there is also a "economical" mode 2Mbps with more poor quality.
Firms Olympus and Sony cannot while "to brag" of several models with high-grade MPEG-4, however chambers Olympus C-7 and Sony M are quite confidently looked on a background of the others. Olympus C-7 has very quite good for 2Mbps quality and rich photofunctions. hp nc 6000 notebook Sony M amazes with original design and has a quite good videomode with an excellent sound and the quality only a few conceding Sanyo S1/C4/C5.
Cameras with videorecording 640x4 30fps, certainly, cannot replace completely MiniDV a videocamera in hands of the fan - too different requirements are shown to these devices, including on ergonomics. Nevertheless, many modern photovideocameras are quite capable to provide quality, sufficient for comfortable viewing on the usual TV, and support MPEG- by the majority modern DVD-proigry'vateley does a way from MPEG- chambers up to a disk as much as possible short.
Oleg Mikheyev aka the Grey Wolf (graywolf@ .com) Dmitry Dorofeyev aka DMITRIY (dmitrydor@ .com) It is published on September, 23rd, 20 Other discussions in conference:
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