focus of lens
41focus — A point of convergence, such as the point at which rays of light converge in an optical system, or from which they diverge; also called focal point. The clarity of an image, such as when rendered by an optical system; or to make an image clear …
42lens — n.; pl. lenses [L. lens, lentil] Transparent covering of the eye, serving to focus the rays of light …
43lens — n. 1) (in anatomy) the transparent crystalline structure situated behind the pupil of the eye and enclosed in a thin transparent capsule. It helps to refract incoming light and focus it onto the retina. See also: accommodation 2) (in optics) a… …
44Focus Pull — F/A/V The refocusing of a lens during a shot to keep a moving subject in focus or to change the person or object of attention. (Cinematography) …
45focus lamp — noun 1. : an incandescent lamp having a filament coiled or crumpled into a spiral or zigzag form so that the light, being concentrated in a small space, can be brought into the focus of a lens or mirror 2. : an arc lamp with feeding mechanism so… …
46lens — a usually spherical body of the eyeball suspended by suspensory ligaments and used to focus images on the retina. Fish lenses have been used as age indicators in fishes …
47focus — Adjustment of the distance setting on a lens to define the subject sharply …
48lens — One or more pieces of optical glass or similar material designed to collect and focus rays of light to form a sharp image on the film, paper or projection screen …
49focus point — point upon which a lens is focused …
50focus puller — noun a person responsible for keeping the lens of a video or film camera focused during filming …
