10-15-2014, 01:10 PM
Nice to see a Nikon review 
Yep. The Sigma is designed for sharpness, but doesn't render backgrounds as nicely as the Nikkor does.
About that "cat's eye"- effect mentioned in the review (mechanical vignetting, isn't it?): I think this is what produces a "swirly" bokeh, especially if there is foliage in the background. A lot of people actually like this effect (me included). I think my old Helios 44-2 is even better at this than the Nikkor, but it's probably less sharp wide open
Quote:Still, this lens is not about sharpness, but about rendering softer in OOF parts on purpose. With a silly price tag.
Yep. The Sigma is designed for sharpness, but doesn't render backgrounds as nicely as the Nikkor does.
About that "cat's eye"- effect mentioned in the review (mechanical vignetting, isn't it?): I think this is what produces a "swirly" bokeh, especially if there is foliage in the background. A lot of people actually like this effect (me included). I think my old Helios 44-2 is even better at this than the Nikkor, but it's probably less sharp wide open