Sigma did it again!  On the heels of its success with the Sigma 35mm f./1.4 lens, the early reviews place the Sigma 50mm f./1.4 in a lofty category as a first class optic suitable for any professional or serious amateur use. Early reviews seem to support Sigma’s claims that its new 50mm f/1.4 lens surpass Nikon and Canon as competitors and take on the incontrovertibly outstanding $4000 ZEISS 55mm f/1.4 Otus lens. The only question now is whether brand conscious photographers will buy the Sigma over the Otus lens or the Nikon lens. To view the specs of the Sigma…