Description: Designed for use with full frame digital cameras
May also be used with smaller APS-c size sensors Two Aspherical glass elements offer correction for distortion Minimum focusing distance of 7.9 inches allows close-up photography with a lens to subject distance of only 2.6 inches providing a magnification ratio of 1:4 Rear focus system eliminates front lens rotation & is suitable for use of Petal-type lens hood & polarizer filters A lens hood, front/rear lens cap and carrying case are included with the lens.
Focus Type: Auto/Manual
Works with this type of camera: APC, Full Frame and Film
Focal Length: 20mm
Elements: 13 Elements in 11 Groups f-Stop Range: f1.8 - f22
Minimum Focus: 7.9 inches
Zoom Type: N/A
Length of lens retracted: 3.5 inches
Length of lens zoomed out: N/A
Image Stabilized: No
Aperture ring on the lens: Yes
Filter Size: 82mm
Lens Hood: Yes
Weight in ounces: 18.3 oz
The Sigma Advantage
Technology and Innovation
Sigma was founded, nearly 50 years ago, on the creative thinking and the pursuit of innovation, design and development of a rear lens converter, which, at the time was thought not possible. That perseverance, commitment to new photographic developments and high standards of quality is what drives Sigma, still, today. The chairman and founder, who remains at Sigma’s helm even today, continues to drive Sigma toward designing and discovering new optical technology that meets the needs of today’s ever changing photo world and the demands of the photographers themselves.
Sigma Lens Quality
Sigma lenses provide the highest optical quality coupled with the newest technological innovations. Quality is never compromised and always the focus. Every phase of research, design, processing and production is done, on site, in the Sigma Tokyo factories. This allows the highest degree of quality control ensures a high, consistent level of quality as we process all of our own high-performance Special Low Dispersion glass (SLD), metal and resins, surface treatments and other elements.
Selection and Affordability
As the largest independent lens manufacture, Sigma offers over 50 lenses. You’d be hard pressed not to find multiple lenses to suit your needs, skill level, type of photography and most importantly, your vision. And don’t forget, Sigma lenses are considerably more affordable than other manufacturers, which sweetens the deal!