It was used on one of the younger cameras in the Pentax line - K200D - in the entire history, 2-3 pieces were not thrown out of the frames shot at 1.4. Starting from 1.8-2 is quite suitable. Starting from 4-5.6 - very sharp. Large chromatic aberrations are noticed at the same 1.4. The price is very inadequate. At the time of writing the review, the price is 16,500, while the cost of analogues in other systems is 10,500 for Nikon and 13,500 for Canon. Probably, the lack of competition in the face of the "younger" (F / 1.8) fifty dollars affects.
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