Sigma EX 10-20mm f/4,0-5,6 DC HSM Digital Pentax AF
The super wide-angle capability of the 10-20mm zoom makes it a very powerful tool for both indoor and landscape photography. It is specifically designed to optimise results with digital SLR cameras encorporating APS-C size image sensors or smaller.

The wide angle of view (102.4°at 10mm) with broader perspective, offers the photographer greater freedom of expression.

EX Lens Series; Excellence Of Engineering And New Technology Three SLD glass elements are employed for effective compensation of colour aberration, a common problem with super-wide angle lenses. One molded glass element and two hybrid aspherical lenses, offer excellent correction for distortion, as well as all types of aberration.

Specifications
Lens Construction 14 Elements in 10 Groups
Angle of View (SD Format) 102.4 - 63.8 degrees
Number of Diaphragm Blades 6 Blades
Minimum Aperture F22
Minimum Focusing Distance 24cm
Maximum Magnification 1:6.7
Filter Size 77mm
Dimensions Diameter 83.5mm X Length 81mm