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The super wide-angle capability of the Sigma 10-20mm zoom makes it a very powerful tool for both indoor and landscape photography. It is specifically designed to optimise results with digital SLR cameras incorporating APS-C size image sensors or smaller. Aspherical lenses provide maximum correction for distortion and various aberrations; high image quality is displayed throughout the entire zoom range. It has a minimum focusing distance of 24cm (9.4”) at all focal lengths. It is also equipped with an integral Petal-type hood to block out extraneous light.
The new multi-layer lens coating and lens design reduce flare and ghosting, a common problem with digital cameras and also creates an optimum colour balance through the entire zoom range.
Three SLD (Special Low Dispersion) glass elements ensure ultra-high resolution and sharpness. One glass mould and two hybrid aspherical lenses offer excellent correction for distortion, as well as all types of optical and colour aberrations. This lens also incorporates an internal focusing system, which eliminates front lens rotation, allowing the use of a petal-type hood and also minimizes fluctuation of aberration caused by focusing system.
Maximum aperture: 4.
Minimum aperture: 22.
Lens Construction: 10 groups, 14 elements.
Blades in Diaphragm: 6.
Angle of View: 102.4-63.8 degrees.
Minimum Focusing Distance: 24cm.
Dimensions (Length x Diameter): 83.5mm x 81mm.
Filter size: 77mm.