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lens Inglés británico e internacional

A piece of glass or other transparent material with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope)

lens hood Inglés británico e internacional

A tube or ring attached to the front of a camera lens to prevent unwanted light from reaching the film

long lens Inglés británico e internacional

A lens with a long focal length, especially as a camera attachment for taking photographs from a great distance

twin-lens Inglés británico e internacional

(Of a camera) having two identical sets of lenses, either for taking stereoscopic pictures, or with one forming an image for viewing and the other an image to be photographed (twin-lens reflex)

zoom lens Inglés británico e internacional

A lens allowing a camera to change smoothly from a long shot to a close-up or vice versa by varying the focal length

crown lens Inglés británico e internacional

A lens made of crown glass and usually forming one component of an achromatic lens

field lens Inglés británico e internacional

In a multiple lens optical system, the lens farthest from the eye

macro lens Inglés británico e internacional

A lens suitable for taking photographs unusually close to the subject

prime lens Inglés británico e internacional

A lens of fixed focal length

contact lens Inglés británico e internacional

A thin plastic lens placed directly on the surface of the eye to correct visual defects

electron lens Inglés británico e internacional

A device for focusing a stream of electrons by means of electric or magnetic fields

standard lens Inglés británico e internacional

A camera lens with a focal length approximately equal to the diagonal of the negative (taken as 50 mm for a 35 mm camera), giving a field of view similar to that of the naked eye

achromatic lens Inglés británico e internacional

A lens that transmits light without separating it into constituent colors

crystalline lens Inglés británico e internacional

The transparent elastic structure behind the iris by which light is focused on to the retina of the eye

gravitational lens Inglés británico e internacional

A region of space containing a massive object whose gravitational field distorts electromagnetic radiation passing through it in a similar way to a lens, sometimes producing a multiple image of a remote object

progressive lens Inglés británico e internacional

An eyeglass lens having a smooth transition between parts with different focal lengths, correcting for vision at all distances

single-lens reflex Inglés británico e internacional

Denoting a reflex camera in which the lens that forms the image on the film also provides the image in the viewfinder

fisheye Inglés británico e internacional

A very wide-angle lens with a field of vision covering up to 180°, the scale being reduced towards the edges

fisheye lens in fisheye Inglés británico e internacional

A very wide-angle lens with a field of vision covering up to 180°, the scale being reduced towards the edges

fresnel Inglés británico e internacional

A flat lens made of a number of concentric rings, to reduce spherical aberration

fresnel lens in fresnel Inglés británico e internacional

A flat lens made of a number of concentric rings, to reduce spherical aberration

objective lens in objective Inglés británico e internacional

The lens in a telescope or microscope nearest to the object observed

progressive lenses in progressive lens Inglés británico e internacional

An eyeglass lens having a smooth transition between parts with different focal lengths, correcting for vision at all distances

telephoto Inglés británico e internacional

A lens with a longer focal length than standard, giving a narrow field of view and a magnified image

telephoto lens in telephoto Inglés británico e internacional

A lens with a longer focal length than standard, giving a narrow field of view and a magnified image

Lens culinaris in lentil Inglés británico e internacional

The plant which yields lentils, native to the Mediterranean and Africa and grown also for fodder

twin-lens reflex in twin-lens Inglés británico e internacional

(Of a camera) having two identical sets of lenses, either for taking stereoscopic pictures, or with one forming an image for viewing and the other an image to be photographed (twin-lens reflex)