Other measures are also used see table of sensor formats and sizes below. Sensor size is often expressed as optical format in inches. Because the image sensors in many digital cameras are smaller than the 24 mm × 36 mm image area of full-frame 35 mm cameras, a lens of a given focal length gives a narrower field of view in such cameras. The image sensor format of a digital camera determines the angle of view of a particular lens when used with a particular sensor. In digital photography, the image sensor format is the shape and size of the image sensor. For broader coverage of this topic, see Image sensor.
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