Telecentric lens
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A telecentric lens is a special type of optical lens that has its entrance or exit pupil, or both, at infinity. Telecentric lens image magnification is insensitive to either the distance between an ob
Bi-telecentric lens with 208 mm diameter front element and a C-mount camera interface
Camera lens
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A camera lens, photographic lens or photographic objective is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographi
Different kinds of camera lenses, including wide angle, telephoto and speciality
The zoom lens assembly of the Canon Elph
Apertures in 1-stop increments on the same lens.
How focal length affects photograph composition: adjusting the camera's distance from the main subject while changing focal length, the main subject can remain the same size, while the other at a different distance changes size.