Central sharpness is very good at f/1.4, excellent from f/2 to f/11, very good at f/16 and good at f/22. The edges are very good from f/1.4 to f/2.8, excellent from f/4 to f/8, very good from f/11 ...

Sigma's 85mm f/1.4 EX DG HSM is a short telephoto lens with a bright f/1.4 maximum aperture, perfect for isolating your subject from the background by utilising the effect of shallow depth of field.