Sigma 28mm f/1.8 EX DG ASP Macro (Canon Mount) reviews: Lens

This is a fast and quiet lens in operation, with the extra stop giving a bright, clear viewfinder image for picking out those details, particularly in low light…the vignetting aspect of the lens, even wide open, is astonishing. Dr. Bell measured vignetting on the bench, but in the field, to the naked eye, it is invisible. If you like prime lenses and appreciate the quality, the 28mm f/1.8 is a lens that is seriously worth considering. The near-human-eye viewpoint for the digital SLR user is another bonus that should ensure the optic’s success.’