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30 Июнь 2010

iTogi 2004: Digital Photography (part2)

написано в рубрике: News — admin @ 9:54

Cameras with high magnification lens
With regard to this class of amateur digital cameras generally about “reincarnation of engineering solutions” are also fully applicable.
Early examples of this technique, the main feature of which is a zoom with a magnification of 8-14X, a mandatory system supplied with optical image stabilization shooting is possible with a sufficiently “long” exposure, even at maximum focal length.
Without these systems, the maximum shutter speed should be inversely proportional to the focal length – for example, focal 420 mm excerpt should be no “long, 1 / 420, otherwise the image will” blur “, but with optical image stabilization system can exhibit” stretch “to 1 / 100 .
However, such systems did stabilize the lens is extremely cumbersome, without the possibility of “folding”, so the camera of this type gave way to “long-range” model without a stabilizer, but with retractable into the housing optics.
“Shortening” excerpts intended to compensate for the expense of endurance, but the result was a significant sprouting of noise in the frames.
Therefore, cameras with high multiplicity at the moment can be divided into two categories.
The first is the model without stabilization.

They are characterized by a permanent reduction in the size of a total for all amateur model resolution increases, and saturation functions.
In fact, the possibility of “long-range” shooting in these cells – rather an additional “trump card” than the main function, as it requires a very good illumination of the photographed object, or the availability of a tripod.

The second category of models with high multiplicity of the lens includes a camera with varying optical stabilization system.
Minolta cameras with stabilization by moving the CCD rather have compact dimensions, but the effectiveness of optics compensate for fluctuations in these systems is not high enough.
But the scheme with a corrective lens used in the model Canon and Panasonic has established itself with the best hand.
At the same time due to new technological level of this system was implemented in the reduced dimensions, and the lens perform “folding”.
The ‘long-range “shooting at the cameras in this category, of course, is fundamental.
Electronic “reflex”

Cameras in this category are some of the hybrid multi-camera (on them they have better optics, an abundance of features and the ability to install accessories to the lens and the external optics) and long-range “models (higher magnification of the lens and use the LCD viewfinder instead of the telescope).
But in an effort to make this technique as much as possible like a “real” reflex “camera manufacturers supplied data impressive metal body, studded with numerous buttons and levers.
Electronic “reflex” first “overstepped” vosmimegapikselny abroad, while maintaining cost slightly less than that of digital SLR cameras classical scheme.
How long will they be able to “fit” in the niche between the multi-purpose amateur models and professional cameras – time will tell.
Professional Models
This class includes all digital SLR cameras classical scheme, the size of the sensor is sufficiently close to the dimensions of HR spots 35 mm and APS-camera to use replaceable lenses from film cameras, designed for standards mentioned.
The most interesting entry-level model, the cost of which ranges from $ 1000.
Unfortunately, the novelty of Olympus in the standard “Four Third” – EVOLT E-300 – entered the market at a price of $ 1000, so the “meltdown” of prices has not happened.
As one of the possible reasons for such value indicates the unsold stocks of electronic “reflex” Olympus C-8080.
Furthermore, as practice shows, the high prices phototechnics Olympus tend to fall sharply …
As the top models, as among the “rapid-fire” reportage cameras and among digital cameras with higher resolution becoming more common CMOS sensors.
Moreover, the recognized leader in manufacturing CCL-matrices Concern Sony, said the desire to take first place and part of the production of CMOS image sensors.

Studio Camera
In the field of digital photography studio is widespread “portabilizatsiya.
Virtually every digital medium format camera attachment to (which, strictly speaking, is believed to be an old memory, “the studio digital camera”) is equipped with a rechargeable battery, removable memory module and LCD display for viewing frames.
Thus, the name of “studio” in the designation of this category are more and more becomes a tribute to the tradition.
The main news is likely to be considered as the emergence of 22-megapixel “reflex” Mamiya ZD, which occurred in the person of the final “merging” medium-format cameras and digital consoles, become one piece.
In principle, full-length studio cameras (ie cameras that have the same body were combined shutter and CCD) existed before, but they were really studio (so as to work only when connected to a computer state).
Mamiya ZD is a completely portable device, and thus, actually represents a middle ground between digital SLR cameras based on 35-millimeter equipment and proper studio models.
However, it is used in the CCD has the dimensions 36×48 mm, and therefore requires the use of optics with the size of human box, designed for medium format film, so the Mamiya ZD should be still treated as a studio technology.
The obvious fact was the “dying” SmartMedia, once one of the most popular standards, including the replacement memory modules.
It is caused, first of all, the standard restriction on the maximum amount of modules, which equals 128 megabytes.
Further cost reduction is impossible SmartMedia – manufacturers modules can not operate at a loss.
Replaced SmartMedia firmly established standard xD-Picture Card, which is currently the most promising – the upper limit of these modules is 8 gigabytes, while the rate of exchange than most other types of memory.
Most manufacturers of photographic equipment under standard SmartMedia moved into their new models to support the xD-Picture Card, because among other things, a new type of memory is also one of the most compact.

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