Editing Digital camera back (section)

===Hardware evolution===
The early digital camera back market was dominated by scanning, rather than single-shot, models. Since it is much easier to manufacture a high-quality linear (one-dimensional) CCD array that has only a few thousand pixels than a two-dimensional CCD matrix that has millions, very high-resolution scanning CCD camera backs were available much earlier than their CCD matrix counterparts. For example, camera backs with a 7,000-pixel linear resolution—capable of scanning to relatively slowly produce pictures of about 40&nbsp;MP—were available in the mid-1990s.

Many earlier multi-shot backs could natively capture only [[grayscale]] images; color images were created by scanning three times through red, green, and blue filters which rotated into place.

Early digital camera backs created more data than could be stored on the relatively small storage devices of the time that could be built into them, and had to be connected (tethered) to a computer during capture.

Later, one-shot digital backs, which can work at all shutter speeds even on motorized medium-format cameras, were produced. Images are stored on fast high-capacity plug-in memory cards, making tethering to a computer unnecessary so that the backs could be used wherever film can be used.