Focal length is used to determine your lens's angle of view ... rays of light converge within a lens (the point of convergence) to the camera's sensor (or film) and is calculated while the ...

When you focus an image using a focusing ring, you're moving the lens so the focal point is in line with the film, in a film camera, or sensor, in a digital camera. (This diagram shows an image ...

Sony's latest lens is the world’s first telephoto zoom lens with a maximum focal length of 150mm and constant f/2 aperture.

An inventory of gender focal points and identification of a typology of gender focal point's functions; An organizational profile of gender focal points including their structural locations ...