Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Camera

10-20mm F4-5.6 EX DC HSM Lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with Digital SLR cameras. Wide angle of view (102.4 degrees at 10mm and 63.8 degrees at 20mm) offers the photographer greater freedom of expression. 3 Special Low Dispersion (SLD) glass elements are employed for effective compensation of Color aberration, which is a common problem with super-wide angle lenses. One piece of glass mold and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration. This lens is equipped with an inner focusing system, and the models which are equipped with HSM system provide quiet, high speed Autofocus shooting and also offer full time manual focusing. It has a minimum focusing distance of 24cm at all focal lengths. The non-rotating lens barrel perfectly suits the petal shaped lens hood. A circular polarizing filter can also be used conveniently.

Covers a superwide angle of view 102.4 degrees to 63.8 degrees

3 pieces of SLD elements and 3 aspherical lens elements produce top quality Optical performance

Inner focusing system ensures the length of the lens remains unchanged whilst controlling aberrations

Minimum focusing distance of 24cm (9.4 inches) at all focal lengths

Lens Construction: 14 Elements in 10 Groups

Angle of View: 102.4 - 63.8 degrees

6 Diaphragm Blades

Minimum Aperture F22

Minimum Focusing Distance: 24cm/9.4 inches

Maximum Magnification: 1:6.7

Filter Size: Diameter 77mm

Lens Hood Petal Hood

Dimensions: Diameter 83.5mm x Length 81mm, 3.3 x 3.2 inches

Weight: 470 gram (16.6 ounces)