Sigma EF 10-20mm f4-5.6 EX DC HSM
This DC series lens is exclusively suitable for Digital SLR cameras with an APS-C sized image sensor. Sigma DG range lenses should be used with full frame 35mm format cameras.
The Sigma 10-20mm EX DC lens is an Ultra Wide Zoom model which has a constant f/3.5 maximum aperture which makes it ideal for indoor photography and gives the photographer reliability and predictability in exposures.
With up to 102 degrees field of view (depending on camera) there is a wide vista recorded giving an exaggerated perspective for interesting effects.
Image quality is excellent, the lens featuring ELD (Extraordinary Low Dispersion) glass, SLD (Special Low Dispersion) glass and aspherical lenses to counter both chromatic (colour) and spherical aberrations. Lens flare is cut well down using Super Multi Layer Coatings and the bespoke petal hood finishes the job. Focusing is Sigma’s best – using a Hyper Sonic Motor (HSM) which has full time manual focus override.