SIGMA 12-24 mm F4.5-5.6 EX DG ASPHERICAL HSM pro digitální zrcadlovky Canon

High-quality lens with very wide-ranging (122 ° diagonal) to kinofilmovém box 24x36 mm with 12 mm focal point - perfect for shooting in enclosed spaces as well as landscape photography. Lens construction is composed of four SLD and three aspherical lenses. A major problem is the wide lens color defect. This lens has been admirably correction of four lenses made of optical glass with a very-low Dispersion (SLD). Image distortion correcting two aspherical and one hybrid aspherical lens - the image has virtually no barrel distortion. Effective optical design and the latest technology allow to construct the extremely compact lens.

The lens has internal focusing system and HSM (Hyper Sonic Motor) autofocus motor, which allows for manual sharpening even autofokusním mode (when the camera shutter closed in and complete the auto focus can be manually refocuses images). Minfocusing distance is 28 cm throughout the zoom range. The lens has a fixed built-in molded sun visor as a protection against unwanted intrusion side beams at the camera, and the creation of glare and light spots on the image.

Parameters and specifications:

Pro SLR brands:
Canon

Optical Structure:
12 groups and 16 lenses

Viewing angle:
122 ° - 84.1 °

Min Aperture:
F22

Minimum focusing distance:
28 cm

Maximum ratio of View:
1:7.1

Filter Diameter:
filter rear foil

Dimensions:
87 x 105 mm

Weight:
600 g