Nowadays the lens Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM is wide-angle lens for full-size cameras (35 mm format) that provides maximal viewing angle: the lens gives viewing angle in 122 degrees with focal length of 12 mm (for comparison, wide-angle lenses like Canon and Nikon can cover 114 degrees with such focal length). And at the same time this lens is cheaper than wide-angle Canon and Nikon.
Wide-angle lens Sigma AF 12-24 mm f/ 4.5-5.6 EX DG ASPHERICAL HSM (minimal focal length – 12 mm) is highly accurate creative photographer’s device. This lens is ideal both for digital cameras and analog one-lens SLR cameras. Providing 122 degrees viewing angle this lens will open you new possibilities of photography.
The model has ultrasonic HSM drive that provides quick and noiseless autofocusing. Also it’s possible to use manuals focusing.
Four elements are made from low dispersive glass (SLD, Special Low Dispersion) and three aspherical lenses including two cast glass lenses, provide good correction of chromatic and other aberrations.
Lens models for Lens Mount Sigma AF, Canon EF and Nikon AF are equipped with HSM-motor (Hyper-Sonic Motor).
It’s impossible to put the filter on the front lens part on focus until 20 mm.
There practically isn’t any distortion even on 12 mm in Sigma 12-24mm f/4.5-5.6 EX DG Aspherical HSM
Labeling EX on the lens body means that it belongs to the series of super high-quality SIGMA optics that combines reliability, comfort and great unsurpassed optical characteristics.
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Posted by: Sergei Borodin Date of publication: 27.07.2010