I do mostly portrait photography, so which lens do you think is better overall and in terms of bokeh? I've heard there is problems with AF on the sigma? Also, the Nikon 1.8g is obviously a lot cheaper than a 1.4, so do you think the 1.4's are worth all of the extra money? Is it really that much better?
См. статью: Sigma 50mm 1.4 or Nikon 50mm 1.4g?