As other reviews already stated, this new 50/1.4 Art Sigma comes very close to the Zeiss Otus, but for only 1/4 of the price. Superb work for Sigma, since the 35/1.8, Sigma is really on fire with their latest Art lens creations – which is a way good thing, competition leads to much better products, the Art 18-35/1.8 is also outstanding in optical quality terms. I expect no less from Sigma with their 24/1.4 when it’ll be released this fall, and the 85/1.4 which is rumored for 2015 must be very good then, too.
Go Sigma, go! Hopefully Canikon would improve their upcoming lens iterations, too.
I’ve got the 30/1.4 Art for my D90/D7000, and being happy with that prime lens.

Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.