The most popular question, which appears at choice of the video camera: "in than difference digital and analog video cameras?" All more people gain the video cameras, and all more often sound the question: "What choose the video camera?" We shall Begin with enumerations the most important on our glance advantage digital video camera. The First and most main - a digital video cameras give the so splendid quality of the scene that about greater You hardly dreamed. Hereinafter - possible frequentative copying, herewith each following copy is got not a bit not worse first. Besides, of no small importance that from moment of the removal before moment of the viewing of Your film passes the minimum of time, but if You want распечатать photography with separate frame then at presence of the computer and colour printer (that unnecessary since such facilities render and in salon) this will occupy whole several minutes. The Quality photography, got such way more high (this is certainly defined by quality of your camera).

Here is now we подошли to most main. What choose the video camera the most optimum that she greatly satisfied Your request and was not too expensive? Your choice in многом will depend on format of the video camera.

Formats of the video cameras

Video cameras of the format VHS-C

The Givenned format of the video cameras is one of the most wide-spread amongst amateur cameras. The Main producer, supporting this format, are Panasonic and JVC. The Main by advantage given format is a possibility проигрывания recorded cassettes on video recorder of the standard VHS with use the special adapter (which usually there is in kit with video camera). Consequently, You there is no need to use the camera for проигрывания made record that enough comfortable, and allows to prolong her(its) services. The Main defect in comparison with Video8 is smaller time record on cassette. The Main mass of the cassettes VHS-With has length record in 30 and 45 minutes on standard velocity against 90 and 120 minutes on cassette Video8.

Video cameras of the format Video8

Izobrela and promotes this format a company Sony. All cameras Sony initial series use this format. Also wide-spread cameras Video8 production Hitachi and Samsung. Possible note that size of the cassette by steels less, than beside cassettes VHS-C that has allowed several reduce the sizes of the camera. Value and defect of this format are a mirror images value and defect of the format VHS-C. The Company Sony releases also several improved formats Video8 XR (eXtra Resolution). The Main difference - increased amount line (approximately on 10%). The Cassette remains former.

Video cameras of the format SVHS and Hi8

Origin these format is connected with dissatifaction of the users by quality of the scene, got by means of cameras VHS-C and Video8. Significant increase quality got picture has brought about increase the cost both cameras, and cassettes. However play cost(stand)s the candles. The Improvement quality well noticeably visual though available under проигрывании record on most camera only. Buying special video recorder SVHS or Hi8 will dispense You in decent amount.

Necessary also to note that on these camera is usually written стереозвук though they are released and variants with sound mono. The Video cassettes SVHS-С and Hi8 look absolutely in the same way, either as their younger congeners and differ only type of the used tape. The format Hi8 XR exists Like Video8 XR. Asks permission, than this Sypep-VHS better simply VHS'а? Amongst technical features was declared and personified in ferric horizontal permit pictures 400 tv lines instead of 250 in VHS, perfected correlation signal/noise (from 43 before 60 dB), band of the videosignal in 5MHz (instead of 4.5 in VHS - just and gives the improvement of the picture), the best division color and monochrome forming, as effect - "before 5 mineses without loss quality", the best control equipment on base period-code... well and etc. To the whole have added compatibility" from below upwards" for VHS. For accepted beside us television standard 625 strok/50 flap 1 MHZ frequencies of the video signal corresponds to the allowing abilities on горизонтали 78 твл.

In accordance with this standard band frequencies of the video signal of the broadcasting television is limited 6 MHZ. Consequently, maximum allowing ability of the television scene on горизонтали is limited by value 468 tvl....the allowing ability modern television set not worse 450 твл. Whereas, frequency of the video signal 1МГц corresponds to the allowing abilities on горизонтали 78 твл, possible easy define that at passband on signal of brightness whole only before 3 MHZ with VM format VHS impossible to get the scene with clearness, exceeding 240 твл. The Main advantage VM format S-VHS in contrast with VHS - more high allowing ability on горизонтали (400 твл, but in VHS-240), smaller cross hindrances and more high attitude signal/noise. These advantage are reached basically due to essential extension of the band of the frequencies of the signal to brightness... in VM format S-VHS frequency поднесущей CHM signal to brightness is increased before 6,2 MHZ (VHS-4,3). Deviaciya frequencies in format S-VHS is increased before 1,6 MHZ (VHS-1МГц). (the diagrams to type can not) In VM format VHS when change of brightness of the sent scene from level of the tops синхроимпульсов before nominal level white is accepted change the frequency CHM signal from 3,8 before 4,8 MHZ. In S-VHS this range to brightness corresponds to change the frequency CHM signal from 5,4 before 7 MHZ. This has allowed to raise the attitude a signal/noise, and, consequently, perfect the contrast of the scene. The Signal цветности полосовым stands out in both format by filter with central frequency 4,43 and passband 1 MHZ and is converted in signal with низкочастотной поднесущей 629,95 (Pal) i.e. signal цветности is carried in area of the lower frequencies. At signal цветности in S-VHS has several more broad bands. The Lower lateral band CHM signal to brightness in both format spreads before band of the frequencies of the signal цветности, carried in area of the lower frequencies. So in VHS maximum frequency in signal of brightness reaches 3,2 MHZ that corresponds to the allowing abilities on горизонтали 240 твл. In S-VHS width of the lower lateral band CHM signal to brightness reaches 5 MHZ that corresponds to 400 твл. (On material of the journal "TKT").

Video cameras of the format Digital8 (D8)

With appearance of the digital video cameras of the format miniDV turned out to be that video amateur, striving to increasing quality scenes, must abandon to old, dug year archive recorded on cassette Hi8. The Company Sony will go toward requirements market and has released the intermediate variant digital video recording on cassette of the format Hi8 (possible though and is not recommended use the cassettes Video8). The Truth, happened to to waive time a record (on cassette Hi8 possible to write video in standard D8 on the one third less on time). It Is Justified this significant improvement quality scenes (it approaches to broadcasting) and different advantage such as digital effects, digital port on standard IEEE 1394 and others Yes, it is necessary to add that mode LP in these camera is not provided. Naturally that camera D8 can be used for viewing the old cassettes Hi8 and Video8. Herewith, cost of such camera is found within 700-1000 dollars that more cheaply cameras miniDV.

Video cameras of the format MiniDV

We go the serious border and fall into the world digital video. Now scene and sound in Your camera will be kept only digitally. You will be able to use all advantage digital video on all amounts. The most important of them this:

1. possibility frequentative rerecording without loss quality scenes and sound (with use the port IEEE-1394)
2. possibility of the processing видеоматериалов by means of personal computer completely digitally
3. use the mode LP (long play - decelerated velocity of the reproduction/record) without loss quality
4. small size and high capacity of the cassette and others

The Quality of the scene of such cameras practically do not yield broadcasting, but on some parameter and exceed the professional format Betacam-SP. The Small sizes of the cassette have allowed dramatic to reduce the sizes of the cameras, the last copies practically fit on palm. Excessive to speak that all models of the video cameras write стереозвук moreover with quality CD. The Main defect of the video cameras miniDV is a price, she is seldom lowered below $1000 though you not пожалеете about like aquisition. Real to spare possible gaining such cameras in internet-shop, where "накрутка" minimum.

Digital фотокамеры

According to chronologies of the creation digital photo cameras, the first were created professional фотокамеры, but then on base CCD chip (hereinafter PZS matrix) were created comparatively cheap home photo of the camera business purposes. Before recent time was accepted to divide the digital photo of the camera on two said classes, but with appearance digital photo cameras Kodak DC-120 and Olympus C-1400XL, has occurred the additional fission, appeared, so-called, полупрофессиональный class. Today, essential progress in the field of production TTL linear and nonlinear полнооконных digital photo of the matrixes has intensified this fission and has raised the class home and полупрофессиональных of the cameras on permit got personnel(frames) and PZS matrixes to younger camera professional class, but difference hitherto remained. Since distinguish these three classes and what choose itself camera?

I offer You, on my glance, the main signs allowing distinguish professional digital фотокамеры from полупрофессиональных and from home фотокамер.

Depth of the colour and permit PZS matrixes

Nearly all professional digital фотокамеры are run for the base nonlinear PZS matrixes with depth of the colour 10 or 12 bits on color channel with светофильтрами, preventing effect to saturations. These are PH matrixes, as a rule, are made on technologies Full-frame with element of the square form and realize the algorithm Frame after Frame . In полупрофессиональных and home camera are used more cheap 24- битные RGB PZS matrixes (only on 8 bits on color channel). Usually, linear matrixes are used in home camera with element эллипсоидной forms, but in полупрофессиональных as linear, so and nonlinear PZS matrixes with element of the square form. Sometimes, the producers use more qualitative, nonlinear PH matrixes and in home camera. Else year back possible was clearly say: professional cameras have a high permit (from 1024 h 1280 points before 2008 h 3040 points), but rest low (from 640 h 480 points before 1280 h 960), that today this already not so currently. Presently, полупрофессиональные and home digital фотокамеры have a permit of the matrixes from 1,3 million point before 2,5 million point and permit of the personnel(frames) before 3,3 million point, but professional from 1,5 million point before 10 million point. So, at choice of the camera come from real required for decision of your problems of the permit PZS matrixes. Why you camera on 2,11 million point if You want to place its tourist фотоальбом in Internete, You will it is enough to this effect whole only 1,3 million point.

Format of the conservation to information

Traditionally professionals (the фотохудожники, reporters, полиграфисты, advertising and дизайнерские aspic) for work with digitated by scene use broad not компрессионный format of keeping to graphic information TIFF allowing work with 30-ti, 32-h or with 36-ti class CMYK scenes of the format not less A4 and density of the scene 300 h 300 points on inch. Exactly this requirements and is conditioned high разрядность PZS matrixes of the professional cameras. The Professional must get ready TIFF file. So all professional cameras save the scene in format TIFF and only some of them have a possibility to work with компрессионными format of the type JPEG.

Home cameras on the contrary, work only with компрессионными format JPEG or FlashPix since for ordinary user much it is important to save the maximum amount of the personnel(frames) in minimum volume of the memories of the camera. Poluprofessionalinye cameras use as format writing the scenes as компрессионные formats JPEG, FlashPix, as well as not компрессионные formats TIFF or BMP. From frame, got полупрофессиональной by camera, you without labour will be able to get CMYK scene with density 300 h 300 points on inch by size 10 h 15 refer to, and use him(it) in professional polygraphic functioning.

Optics

On professional digital фотокамеру You will be able to install its loved lens with Your film mirror camera, whether Nikkor, Canon or Sigma. Home and полупрофессиональные фотокамеры constructive are made so that impossible to change the installed producer optical system. So, for improvement quality removals, producers of the cameras equip home and полупрофессиональные digital photo cameras optical and digital "Zoom" system. Already became traditionally that digital photo camera has multifunction "Zoom" system, for instance: 2-h multiple digital multiplier plus 3-h multiple optical or 2,5 multiple digital pluses 2-h multiple optical and etc. Some cameras, for instance cameras Sony, are equipped powerful 10 or even 14 multiple optical "Zoom" system. The most simple home cameras have only digital multiplier or in general his(its) have not nor what. Installation is provided In полупрофессиональных digital фотокамерах constructive to optical system additional преобразовательных lenses for macro, tele-photo or panaramic removal.

Funkcionalinosti

Professional digital фотокамеры are produced on the base broadly known body professional mirror 35 mms film репортажных cameras and 4х5 студийных фотокамер such as: Nikon, Canon, Mamiya, Hasselblad, Sinar, Toyo, Area Swiss and etc. In other words, the producers professional фотокамер take popular mirror фотокамеры, delete all unnecessary leaving mechanical shutter, stuff their PZS matrix along with всякой electronics that allows to save all professional, manual and automatic, functions afore-mentioned фотокамер and satisfy the requirements strict professional фотодела. Some producers produce and original professional фотокамеры on the base own body фотокамер and дизайнерских of the decisions. Home digital фотокамеры are greatly automated and are adapted to ordinary user. Practically, it is necessary only to press the button and ready. The Majority of the cameras of this class "Focus Free" (the free Focusing).

Poluprofessionalinye digital фотокамеры too are greatly automated, but they in obligatory order has a manual modes of the tuning. For this class digital фотокамер without fall presence such function as: incremental multistage Auto Focus (the automatic focus) with possibility of the choice of the mode of the removal: macro-, telephoto or panorama, but in the same way преобразовательные of the lens; the manual modes of the choice to exposures, manual balance of the white colour, extended range of the velocities of the electronic diaphragm (from 16 seconds before 1/10000 seconds) with manual brandy and so on.

Interface and carrier to information

Because of big size of the got scenes from 3,5МВ before 15МВ, the professional cameras are equipped SCSI interface or interface IEEE 1394. Poluprofessionalinye and home digital фотокамеры give the personnel(frames) greatly smaller size, and are as a rule equipped RS232 (RS422) by interface on serial port PC and телевидео leaving the standard PAL/NTSC, some of them are in addition equipped USB interface and infrared port IrDA 1.0 Carrier to information for professional cameras are PCMCIA cards 2-go, 3-go type to big capacity, but in the same way микродрайвы. Poluprofessionalinye and home digital фотокамеры as carrier to information use ATA cards 1-go type of the standard Compact Flash or intellectual cards SmartMedia, but in the same way all known 3,5' Floppy disks (Sony).

Technical features

Structured scheme

Nor one of the the most making systems of the analysis of the scenes will change the skilled researcher. This is connected with that that modern science can not create the equipment, which features approached to feature of the human eye and which could change the human brain. Together with that systems of the analysis and processing the scenes, is bored developing in the last decennial events, allow at participation of the skilled researcher on order to enlarge capacity of the labour and operative to get the results high quality.

Any modern system of the analysis of the scenes comprises of itself three associate blocks between itself. First, this optical device, forming scene such as стереомикроскоп or microscope. The Second block - a block of the issue and keeping to information, including in itself video camera, digital фотокамеру or scanner, connected to computer. The Type of the solved problems, particularities of the processing and the form of the presentation result defines the third component of the system COMPUTER and installed software on her. At blocks must be согласованны between itself so that scene, formed by microscope or the other instrument, in process of his(its) issue on computer and the after-treatment felt minimum distortion.

The Video camera, фотокамера, видеобластер and scanner (in system can be used or subsystem фотокамера-scanner or subsystem video camera-видеобластер ) are important forming parts of the system and are intended to save and send got from microscope scene with minimum distortion in COMPUTER. Naturally than above permit and sensitivity of the camera, as well as permit видеобластера or scanner, more so packed scene, which they form, corresponds to the original.
Neobhodimaya allowing ability of the video camera is defined size under investigation object scenes. Under minimum linear size of the element of the analysed scene l (the mm) permit video cameras must be not less 1*5/l*e (the pixels on mm) provided that for unambiguous recognition of the object of the scene on it must happen to not less five pixels of the permit of the video camera.

The Computer and installed on him software must provide the issue and processing the digitated scene in real scale of time with minimum distortion. The Allowing ability and the other features of the monitor, up to size of the screen, correspond to the installed video camera and problem for decision which is used system.

The Principle of the functioning(working) the system consists in following: scene leaves with object, since reflection and absorption of the light for different phases, in consequence of presence of the particularities in chemical composition, different, that is as a result got halftone scene; the got scene is sent by video camera in personal computer, which under management specially designed software realizes automatic or semiautomatic analysis of the got scene.

Review of the methods of the digital processing the scenes

The Preliminary analysis of the scenes allows to draw a conclusion about that that:

1. First, majority of the scenes, in process of their shaping (фотографирования scans and etc), are subjected to the influence of the row negative factor (the vibration фотокамеры, unevenness of the motion scanning element and etc), bring about смазанности, appearance малоконтрастных and зашумленных area and etc.
2. secondly, suppressing majority of the methods is founded on separation object on scene and the most further their analysis.

Thereby, previously than be subjected to the analysis, scene must pass the stage препарирования, which consists in execution operation improvements visual quality (increasing of the contrast, removal размытости, underlining of the borders, filtering) and operation of the shaping the graphic preparation (the segmenting, separation sidebar) of the scene.

Change the contrast. The Weak contrast is usually caused by small dynamic range of the change to brightness, or strong нелинейностью in issue level to brightness. The most Simplest method контрастирования is a functional image shades of gray fij in gij that is to say gij = R(fij). In practice much often use the linear functional images. If as a result of unevenness of the illumination under фотографировании or fabrication photography, appears the situation, when different area of the scene possess the miscellaneous by contrast. In such event for change the contrast use the adaptive algorithms контрастирования. The Example can serve the algorithm of the local reinforcement of the contrast. The Experimental studies have confirmed high efficiency of the functioning(working) the algorithm in that event if on picture are present the area with obviously uprated or understated contrast.

The Essence of the algorithm consists in that that picture is considered as set of a certain number of the local areas, and these area are processed with provision for their features. Processing to guide to the following sequence: is calculated gain factor cut to density r apart for each local area of the scene. And processing of each pixel of the scene is realized. If r is an unit then on local area of the scene of no action is not produced (if r fine from unit, that is realized increasing of the contrast of the local area). Originally contrast is calculated in analysed point for nearest vicinity. Then, importance of the relative contrast forms with unit, and got importance is taken in algorithm as gain factor p, but is hereinafter produced calculation on formula

Li` = p*Li – int(p*Li/L`max)*L`max

where L`i - new importance of brightness
Li - current brightness of the processed scene
L`max - the necessities maximum importance brightness of the processed scene.

The Smoothing noise. The Scenes influence аддитивного are subjected to in step of digitizations and pulsed noise. Additivnyy noise presents itself certain casual signal, which is added to useful on leaving the system, in considered event аддитивный noise appears in consequence of зернистости films. The Pulsed noise, unlike аддитивного, is characterized influence on useful signal only in separate casual point (importance of the resulting signal in these point takes casual importance). The Pulsed noise typical of digital systems of the issue and keeping of the scenes. Thereby, the problem of the suppression of the noise appears in process of препарирования scene. The most Simplest method, smoothing noise, on scene is a smoothing i.e. change of importance of brightness of each element by average importance, found on his(its) vicinities:

fij = (1/p)*Sk,l(fkl)

where fkl I S8(fij) — ensemble point, belonging to vicinities of the point fij (including and point itself fij);
p — number point in vicinities.

Considered method effectively avoids аддитивный and pulsed noise in each element of the scene
The Underlining of the borders. The Methods of the smoothing of the scenes can avoid the noise much effectively. The Essential defect algorithm smoothings is смаз scenes (i.e. reduction to clearness contour element), at value смаза proportional size of the mask, used for smoothing. For unambiguous analysis of the scenes, at calculation of the geometric features structured element particularly, much it is important to take away смаз with sidebar object in scene that is to say intensify the difference between shades of gray contour element of the object and nearby element of the background. In this case when processing the scenes are used methods of the underlining sidebar.

Usually underlining of the borders is realized by method to radio-frequency spatial filtering. The Features filter are assigned in the manner of masks, in which average importance must be is a zero.

One more method of the underlining of the borders is so named steady-state differentiation. In this method importance brightness of each element is divided on statistical estimation среднеквадратического deflections sF that is to say gij = fij/sF (the среднеквадратическое deflection is calculated in a certain vicinities of the element fij).

Mediannaya filtering. Mediannaya filtering pertains to nonlinear method of the processing the scenes and has a following advantage over linear filtering (the classical procedure of the smoothing): saves the sharp swings (the borders); effectively smooths the pulsed noise; does not change brightness of the background.

Mediannaya filtering is realized by motion of a certain aperture (the masks) along discrete scene and change of importance of the central element of the mask медианным by importance (the average importance ranked sequence) source element inwardly apertures. In general event, aperture can have a most varied form, but in practice is most often used square aperture by siz

(2k+1)*(2k+1)где k = 1,2, ...

Segmenting of the scenes

Process of his(its) partition is understood Under segmenting of the scene on component parts, having profound sense: objects, their borders or the other информативные fragments, typical geometric particularities and others In the event of automation of the methods of the reception of the scenes segmenting necessary to consider as the main initial stage of the analysis, concluding in building of the formal description of the scene, quality of the execution which in многом defines the success of the decision of the problem of the recognition and interpretation object.
In general, the event segmenting presents itself operation of the partition final ensemble to planes, on which is determined function of the source scene f(x,y) on k nonblank bound subset si (i=[1,k]) in accordance with some predicate P, definied on ensemble S={s1,s2, ,sk} and taking true importances, when any pair point from each subset si satisfies the некоторому a criterion to homogeneity (for instance, criterion to homogeneity, founded on estimation of the maximum difference to brightness of the separate pixel and average importance of brightness computable on corresponding to area).
Methods to segmentings possible to divide into following main groups:

Porogovye methods to segmentings

These methods is concluded in transformation of the functions to brightness of the scene.

Methods of areas

The Methods of this group are founded on use local sign scenes. The Idea of the method of наращивания areas consists in analysis first start point, then her(its) nearby point and in accordance with some criterion of homogeneity etc, and in the following enrolment analysed point in that or other group (the amount start point must be is an amount of the uniform areas on scene). In more efficient variant of the method as starting point are used not separate pixels, but partition the scene on row of the small areas. Then each area is checked on homogeneity, and if result of the check turns out to be negative, that corresponding to area is split on more small area. The Process lasts until all chosen area will not bear checking for homogeneity. Hereon begins shaping the uniform areas with the help of наращивания.

The Organized analysis shows that пороговая segmenting and segmenting on criterion of homogeneity on base of average brightness often does not give the desired result. Such segmenting usually brings about appearance of the significant number of the small areas, not having real prototype on scene. The most efficient results gives the segmenting on criterion of homogeneity on base of the texture (or текстурных sign).

The Separation sidebar. Not seldom happens to to face the problem of the finding perimeter, curvatures, factor of the form, specific surface object and etc. All enumerated problems are anyway connected with analysis contour element object.

The Methods of the separation sidebar (the borders) on scene possible to divide into the following main classes:

• the methods to radio-frequency filtering;
• the methods of the spatial differentiation;
• the methods to functional aproximation;

The General for all these methods is a longing to consider the borders as area cutting the swing to functions to brightness of the scene f(i,j); distinguishes their вводимая mathematical model of the notion of the border and algorithm of searching for border point. In accordance with put(deliver)ed problem to algorithm of the separation sidebar are presented following requirements: chosen sidebar must be утоньщенными, without breakup and замкнутыми. Thereby, process of the separation sidebar several becomes complicated in relationship by need to use the algorithms утоньшения and removal breakup. However and this not always gives the desired result in most cases sidebars are got незамкнутыми and, as effect unfit for row of the procedures of the analysis.

Allow the appeared problem possible, producing оконтуривание algorithm of the trailing of the borders by method bug , which allows to select the замкнутые sidebar an object [9]. The Essence of the algorithm consists in following: on object is chosen certain starting border point and долее occurs the consequent trailing of the sidebar until will is reached starting point. In the event of trailing of the sidebar clockwise for achievement of the start point is realized on пиксельное motion to the right if pixel is found outside of object, and to the left if on object. Chosen thereby sidebar presents itself closed chain code i.e. the sequence of the coordinates border point object that much for decision of the put(deliver)ed tasks comfortable.

Principles of the action digital фотокамер

In digital, unlike optical, фототехнике role photosensitive element execute CCD-matrixes or CCD-straightedges, converting scene in the sequence electric pulse digital code. The Mechanical central to digital cameras with CCD-matrix serves the полупрофессиональные and professional фотоаппараты leading world producers, in which CCD-matrix is put on place of the photosensitive film. Such фотоаппараты have a removable optometrist, withdrawable rememberring device, built-in flash. shutter Such cameras perfects the endurances from 1/40000 before several seconds. They are used basically for operative фотосъемки.

The Principle of the action digital фотокамеры with CCD-straightedge similar flatbed scanner. The Taking element (CCD-straightedge) moves along sensitive zone of the camera, constantly scanning givenned space. Thereby, principle of the action digital фотокамеры consists in following: cone of rays light from object of the removal, getting through lens (or system of the lenses) of the lens and diaphragm, gets on matrix CCD (Charged Coupled Device). The Matrix CCD or, as her(its) else name, PZS (the converter light-signal) presents itself square-wave matrix from photosensitive element. The Ray of the light, getting on detector element, is converted in analog electric signal. The Analog signals from CCD are converted in digital, are processed and written in memory. The Transformation signal in digital form is produced by means of analog-to-digital converter ADC.

Except CCD, ADC and memories in circuitry digital фотокамеры enter the processor DSP, which forms the scene from digital flow, and convertor JPEG, compressing scene for increase amount prestored personnel(frames).
Several words about the general devil modern digital фотоаппарата. The Wide choice level permits registered personnel(frames) from maximum in 1712 x 1368 before standard 1280 x 1024 and low 320 x 240, basically oriented on tasks Internet. Use for keeping of the scenes of the removable cards флэш-memories to significant capacity (not less 8 MB). Here main standard are Smart Media, Compact-Flash, Memory Stick. Are they At present offered Smart Media cards by capacity from 2 before 32 MB. However trend of the reinforcement position standard Compact-Flash was marked in recently. IBM has surprised the world an микродиском by capacity 340 MB. So, the high capacity allows to write the hundreds of the personnel(frames) with maximum permit (the size not компрессированного frame 1600 x 1200 forms beside 4 MB).
The Removable cards do not exclude presence to built-in memory. She is used as buffer for speedup of the processes of the internal processing the personnel(frames) and writing the consequent personnel(frames).

The Standard set function automatic installation parameter removals: focus, endurances, exposures, diaphragms, distances of the focusing, manual correction to exposures. Nearly obligatory devil of the optical viewfinder is a possibility диоптрийной to correction. The Built-in flash (before 5-6 different modes) by range of the action not less 3 m. All more often digital cameras are equiped additional digital USB output. The Send rate given herewith increases in groups of ten once, process перекачки greater personnel(frames) occupies whole several seconds. There is additional output In majority of the cameras for viewing the scene on TV.

The Possibility of the removal of the consequent personnel(frames) through beforehand given time lag from 10-30 seconds before 3 hours. The Automatic choice of the best frame from consecutively skim series of one object. The Realization of the panaramic removals, when several personnel(frames) unite in one wide-angle scene.

Author: А. V. Savin It Is Added: 03.05.2007