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WIDE-ANGLE LENS

Photonics Spectra
Dec 2007
Carl Zeiss Microscopy LLCRequest Info
 
CarlZeissAG.jpgCarl Zeiss AG has released a high-speed wide-angle lens for use in analog and digital 35-mm single-lens reflex cameras. The Distagon T* 2/28 has an aperture of 1:2.0 and a 28-mm focal length and is equipped with manual focus, a metal casing and floating elements. Available as the ZF model for cameras with the F bayonet and as the ZK for those with a K-mount, the lens has a focusing range from 0.24 m to infinity, an image ratio at close range of 1:5 and coverage at close range of 18 × 12 cm. The lens is suitable for landscapes, architectural photography and short-range portraits and for use in unfavorable lighting conditions. It weighs 530 g, has a diameter of 65 mm and is 94 mm long.


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GLOSSARY
photonics
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
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