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Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye

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0 5430 Aug 15, 2010
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Specifications:
For use with smaller chip APS-c cameras only
The circular field of view produces striking images with exaggerated perspective of near subject & extreme barrel distortion of the surrounding areas
HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus
The minimum focusing distance of 5.3 inches & a magnification ratio of 1 to 6 allows subjects to be as close as ¾ of an inch from the lenses’ front element.

Lens Construction 13 Elements in 9 Groups
Angle of View 180º
Number of Diaphragm Blades 6
Mininum Aperture f22
Minimum Focusing Distance 13.5 cm / 5.3 in
Filter Size (mm) Insertion-type gelatin filter into rear of the lens
Maximum Magnifications 1:6
Dimensions
(Diameter x Length) 76.2 x 77.8 mm/3.0 x 3.1 in
Weight 470g / 16.6oz.