Sigma DC 17-70mm f/2.8-4.5 Macro

Sigma DC 17-70mm f/2.8-4.5 Macro is a auto focus prime zoom lens for aps-c cameras.

Optical design

Full frame equivalent focal length is 25.5-105.0 mm. Thanks to the macro capabilities this lens can make tiny things look big. Has 7 aperture blades, mid-grade lenses usually have this amount of blades. Having rounded blades provides out of focus circle shape closer to a circle.

Physical characteristics

With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options. Weights 455 grams so plan ahead, carry only if really necessary. 82 mm long, requires consideration if you want to carry in the camera bag.