Sigma DG 20mm f/1.8 EX Aspherical RF is a ultra fast autofocus prime lens for SLR cameras.
The optical scheme comprises 13 elements in 11 groups (2AS). Thanks to very high brightness value of f/1.8 it comes as a great tool in poor lighting conditions and small depth of field. Thanks to the 9-bladed aperture, the subjects located outside the depth of field are shown with very smooth features.
This lens has a size of 87 mm. This is a normal size, very convenient in everyday use. This lens weighs 520 grams, given the weight of the camera, it may deliver long wearing problems. The lens is suitable for shooting near objects. Is useful for landscape, architecture, interior and genre photography. Lens fit for low light conditions. Sigma DG 20mm f/1.8 EX Aspherical RF went on sale in 2000.
May be available from: Amazon.com, Amazon.co.uk, eBay.com, eBay.co.uk.
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