Sigma AF 400mm f/5.6 APO is a autofocus prime lens for SLR cameras.
The optical scheme comprises 11 elements in 8 groups. Due to the fact that lens has 6-bladed aperture, the subjects located outside the depth of field may be shown which the nuts-effect in the bokeh.
This lens has a size of 223 mm. The lens of this size it is difficult to carry. This lens weighs 1053 grams, given the weight of the camera, it may deliver long wearing problems. Minimum focusing distance 4 m is only for shooting distant objects. Mounting the filter has a common size. Sigma AF 400mm f/5.6 APO went on sale in 1988. Currently out of production (1994) and is no longer available.
May be available from: Amazon.com, Amazon.co.uk, eBay.com, eBay.co.uk.
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