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This Sigma 310306 EX digital standard prime lens features an HSM (Hyper-Sonic Motor) for quiet and fast autofocus. The 9-blade diaphragm creates a soft out-of-focus effect for ideal portraits.

This Sigma 310109 EX digital standard prime lens features an HSM (Hyper-Sonic Motor) for quiet and fast autofocus. The 9-blade diaphragm creates a soft out-of-focus effect for ideal portraits.

This Sigma 310205 EX digital standard prime lens features an HSM (Hyper-Sonic Motor) for quiet and fast autofocus. The 9-blade diaphragm creates a soft out-of-focus effect for ideal portraits.

Capture stunning images with this Sigma 589306 70-200mm f/2.8 APO EX telephoto zoom lens that is compatible with most Nikon full-frame DSLR cameras and features an HSM (Hyper-Sonic Motor) that delivers fast, quiet autofocus to ensure crisp photos.

Capture high-quality images with this Sigma 589205 70-200mm f/2.8 APO EX telephoto zoom lens that features 2 FLD and 3 SLD glass elements for optimal correction of color aberration. The super multilayer lens coating reduces flare.

Capture vivid, high-quality images with this zoom lens designed for use with Canon digital EOS cameras.

The NEW Sigma 8-16mm F4.5-5.6 DC HSM is the only one of its kind. This is the first ultra wide zoom lens with a minimum focal length of 8mm, designed specifically for APS-C size image sensors. It has an equivalent angle of view of a 12-24mm lens when used on digital camera with an APS-C size image sensor. Sigma's new FLD glass elements, which have the performance equal to fluorite glass, compensate for color aberration.

Designed for use with most Nikon DSLR cameras with an APS-C-size sensor, this Sigma 203306 wide-angle zoom lens features a multilayer coating to minimize flare and ghosting and HSM technology for fast, quiet autofocus.

Designed for use with most Sony DSLR cameras with an APS-C-size sensor, this Sigma 203205 wide-angle zoom lens features HSM technology for fast, quiet autofocus to ensure crisp images.

Snap great images with this Sigma EF-610 DG ST external flash that features auto flash exposure, an auto zoom function and a tilting head to help you find the ideal exposure for a variety of shots.

Enjoy powerful auto flash exposure for your photographs with this Sigma EF-610 DG ST External Flash that offers seamless use with select Canon DSLR cameras. The auto zoom and tilting head help you find the ideal exposure for a variety of shots.

Achieve optimal lighting in your photos with this Sigma EF-610 DG ST external flash that features an auto zoom and a tilting head to help you find the ideal exposure. The flash works seamlessly with select Sony cameras for convenient use.

Achieve the exposure you're looking for in your photos with this Sigma EF-610 DG Super external flash that offers seamless use with select Nikon DSLR and film SLR cameras. The modeling, multipulse and TTL wireless functions expand your creative options.

Illuminate your photography subjects with this Sigma EF-610 DG Super external flash that offers seamless use with select Canon DSLR and film SLR cameras. The modeling, multipulse and TTL wireless functions expand your creative options.

Achieve artful exposure in your photographs with this Sigma EF-610 DG Super external flash that offers seamless use with select Sony DSLR cameras. The modeling, multipulse and TTL wireless functions expand your creative options.