Page "Digital camera" Paragraph 15

The second method is referred to as multi-shot because the sensor is exposed to the image in a sequence of three or more openings of the lens aperture.

There are several methods of application of the multi-shot technique.

The most common originally was to use a single image sensor with three filters ( once again red, green and blue ) passed in front of the sensor in sequence to obtain the additive color information.

Another multiple shot method is called Microscanning.

This technique utilizes a single CCD with a Bayer filter but actually moved the physical location of the sensor chip on the focus plane of the lens to " stitch " together a higher resolution image than the CCD would allow otherwise.

A third version combined the two methods without a Bayer filter on the chip.