cheap digital camera

The Digital camera back is a type of high-end digital photography equipment. Most digital cameras are built to operate as a self-contained unit. This is especially so at the lower-end, for these cameras usually include zoom lens and flashes that cannot be changed.

However, at the highest-end, the equipment pletely modular - a digital camera back is nothing but a sophisticated light-sensing unit. Experienced photographers attach these digital camera backs to their professional medium format SLR cameras, such as a Hasselblad, or a view camera, such as a Sinar.

Linear array cameras are also called scan backs. The first digital camera back was introduced by Leaf Photography now part of Kodak in 1991.

The Leaf DCBI, nicknamed The Brick, offered resolution of 4 million pixels MP.It took another 4 years of development to then introduce the 2nd digital camera back; the DCBII, which included a live-video view. Two years later, in 1996, Leaf introduced the first 6 MP digital camera back; the Leaf Volare.

From 2002, new models were introduced yearly, with rising resolution and sensor sizes, achieving today resolutions of 33MP for the new Leaf Aptus family of digital camera backs. Early digital camera backs were only used in a studio to take pictures of still objects.

Because they created huge amounts of data relative to the available storage mediums at the time, they had to be tethered to puter during capture. They were using linear array sensors which could take seconds or even minutes for plete high-resolution scan.

The linear array sensor acts like its counterpart used in a flatbed image scanner by moving vertically to digitize the image. The latest one-shot digital backs, however, can keep pace with the speediest motorized medium format cameras, and they are for all practical purposes without limitations to the available shutter speeds.

The availability of high-speed, high capacity memory cards have made modern digital backs into self-contained units, which makes them practical for use outside the studio as well. Many of these cameras could originally only capture grayscale images.

To take a color picture, it requires three separate scans done with a rotating colored filter. These are called multi-shot backs.

Some other camera backs are using CCD arrays similar to typical cameras. These are called single-shot backs.

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