Join ePHOTOzine, the friendliest photography community.
Upload photos, chat with photographers, win prizes and much more for free!
Describes how much an imaging sensor has been cropped in relation to its full-frame equivalent. It always describes how many times larger the full-frame is in relation to the cropped sensor. Take an APS-C sensor with a crop factor of 1.6, for instance. This indicates the sensor is 60% of the size of a frame of 35mm film. The crop factor is used to calculate how much of the equivalent of the full-frame field of view the cropped sensor will have with a lens. In order to calculate this, one multiplies the focal length of the lens by the crop factor. A 1.6 crop-factor, for instance, will give a 100mm lens the same field of view as a 160mm lens on a full-frame camera.
Download Perfect Effects 8 Premium Edition worth £79 from onOne Software for FREE today!
Indicates the distance from the film plane to the subject, usually in both feet and meters. Some digital cameras can use lenses originally designed for analogue/film cameras, and in case of digital cameras with cropped sensors the owners should take the crop factor into account when using the focusing scale.