Originally posted by skierd I also think its safe to assume that the Sigma 50 1.4, Zeiss Milvus, Tokina Opera, and the DFA 50 1.4 will be in the price ballpark with each other but unless Pentax whiff's it the DFA should be at least equal if not the best of the bunch.
While I don't doubt that the D FA* 50 f/1.4 will be excellent, why are you so sure it will 'at least' equal, if not best the Sigma 50 f/1.4 'Art' or Zeiss Milvus? I don't know much about the Zeiss, but the Sigma is regarded as maybe
the best 50 mm DSLR lens, full stop.
Based on the reviews I have come across, e.g. the Pentax 70-200 f/2.8, while certainly very good, does not exactly seem to have bested the Nikon or Canon equivalents, so I'm not sure where the confidence comes from that new Pentax lenses would trump everything else optically.