Sigma 4.5mm f/2.8 EX DC Circular Fisheye HSM Canon Lens
Price Reflects $100 Instant Rebate thru 06/30/13
SLD glass minimizes color aberration / 1:6 Magnification / F22 Minimum Aperture / 6 Diaphragm Blades / 180 degrees angle-of-view in all directions
The Sigma 4.5mm F2.8 EX DC Circular Fisheye HSM Lens is designed exclusively for use with APS-C size Digital SLR cameras. This Autofocus circular fisheye lens has an angle-of-view of 180 degrees in all directions. It is exclusively designed for digital SLR cameras with the APS-C size image sensor, and in conjunction with the APS-C size image sensor it produces a circular image within the frame. The F2.8 large Aperture value produces a bright image in the viewfinder and allows photographers to take pictures in low-light conditions, making it an ideal lens for Astrophotography and Aurora photography. This lens can be used for scientific and arts applications such as solid angle measurements of Cloud distribution over the sky or vegetation distribution of the forest. The minimum focusing distance of 13.5cm/5.3" and maximum magnification of 1:6 make it particularly useful for close-up photography. SLD (Special Low Dispersion) glass provides effective compensation of chromatic aberration. Sigma's Super Multi-Layer Coating minimizes flare and ghosting. It is equipped with an inner focusing system that creates High Definition and good image quality over the whole frame. The HSM (Hyper Sonic Motor) ensures fast and quiet auto-focusing and allows full-time manual focus override by rotation of the focus ring.Request a copy of the manufacturer's warranty, click here for details
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