Sigma 20mm f/1.8 EX Aspherical DG DF RF

Sigma 20mm f/1.8 EX Aspherical DG DF RF is a auto focus wide angle lens for full frame cameras.

Optical design

Wide open, subjects located outside the depth of field are shown very blurred. Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result.

Physical characteristics

Weights 520 grams so plan ahead, carry only if really necessary. 87 mm long, requires consideration if you want to carry in the camera bag. With a lens filter diameter of 82 mm lens filters in this range can be expensive, purchase lens - and filter - only if you plan to keep them for long time, make a try with used ones.