Fast Lens

Fast Lens
VP
A fast lwens refers to a lens that is capable of opening to a very low f-stop, generally lower than 2.8, and therefore let's more light into the lens. Fast lenses can better handle low-light shooting situations and are generally more versatile and faster to shoot with, since you have less lighting hassles and can use filters more freely. Naturally, fast lenses are more expensive than other lens.

Audio and video glossary. 2014.

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  • Lens speed — refers to the maximum aperture diameter, or minimum f number, of a photographic lens. A lens with a larger maximum aperture (that is, a smaller minimum f number) is a fast lens because it delivers more light intensity (illuminance) to the focal… …   Wikipedia

  • fast — fast1 [fast, fäst] adj. [ME < OE fæst, akin to Ger fest, firm, stable < IE base * pasto , fixed, secure > Arm hast] 1. not easily moved, freed, or separated; firm, fixed, or stuck [the ship was fast on the rocks] 2. firmly fastened or… …   English World dictionary

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