Aspherical lens

Aspherical lens

A lens with a non-spherical curve used to compensate for a variety of aberrations, including spherical aberrations. Such lenses are effective in controlling the distortion prevalent in wide-angle lenses.

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Industry/Domain: Photography
Category: Professional photography
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Related terms

aspheric lens

Eyewear; Optometry

Lens in which at least one surface deviates from a spherical shape.

aspherical lens

Photography; Professional photography

A lens with a non-spherical curve used to compensate for a variety of aberrations, including spherical aberrations. Such lenses are effective in controlling the distortion ...

aspherical lens

Photography; Lenses; Photography techniques

A lens with a curved, non-spherical surface. Used to reduce aberrations and achieve a more compact lens size. With a spherical lens, rays travelling from the lens periphery create ...

aspherical lens

Photography; Professional photography

lens with a curved, non-spherical surface. Used to reduce aberrations and enable a more compact lens size.

lens

Hunting & fishing; Rods & tackle

As the name implies it is a lens that attaches to target type sights, that adds magnification for increased accuracy. Usually around 2X to 4X for 3D shooting, sometimes more for ...

lens

Language; Encyclopedias

A piece of glass adapted as convex or concave so as to change the direction of the rays of light passing through it and magnify or diminish the apparent size of an object.

rubber lens-mount gasket

Photography; Professional photography

A flexible rubber gasket that forms a seal between the lens and the camera body.

subject-to-camera distance information

Photography; Professional photography

The data supplied to the camera by the lens indicating the distance from the camera to the subject. This information makes possible advances like 3D Color Matrix Metering II and ...

vignetting

Photography; Professional photography

A loss of brightness or saturation at the periphery of an image; usually not desired, but sometimes used to create a vignette framing the subject at the center of the image.

special effects mode

Photography; Professional photography

A mode in which the user can create artistic results simply by adding special effects to still images and movies. To select an effect, the user rotates the mode dial to EFFECTS ...

still picture

Photography; Professional photography

A photograph (static image) as opposed to a movie (moving picture).

stop-motion

Photography; Professional photography

Generic term for an animation technique which makes static objects appear to move. This is done by recording each movement of the object as an individual frame, when each frame ...