Lenses

Lenses

A lens is an optical device which is capable of transmitting and refracting light.

Industry: Photography

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Lenses

F-numbers or f-stops

Photography; Lenses

Numbers on the lens aperture ring and the camera's LCD (where applicable) that indicate the size of lens aperture. The lower the number the larger the aperture. As the scale rises, each number is ...

Angle of view

Photography; Lenses

The area of a scene that a lens can cover. The focal length of the lens determines the angle of view. A wide-angle (short-focal-length) lens includes more of a scene than a standard ...

Aperture

Photography; Lenses

The aperture is the opening formed by the blades of the iris or diaphragm in the lens, through which light passes to expose the film. Aperture size is usually given in f-numbers, the larger the ...

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 the image before ...

Aberration

Photography; Lenses

The inability of a lens to produce a true image, particularly at the edge of a photograph. Usually, the more expensive the lens, the better its optical quality and the fewer aberrations

Lens

Photography; Lenses

One or more pieces of optical glass or similar material designed to collect and transfer rays of light to form a sharp image on film, paper or a projection screen. In practical photography, compound ...

Lens speed

Photography; Lenses

The largest aperture(smallest F-stop) at which a lens can be set. Fast lenses transmit more light and have larger openings than slow lenses. Determined by the maximum aperture in relation to focal ...