Thanks Zos for the convincing reply. I mentioned the Pentax 55-300 as the DxO Mark web site had the following to say:-
DA 55-300 vs DA* 300 f4 How much real gain is there in upgrading to the star prime, over the consumer zoom? I would have assumed the improvement is large, but DxOMark says otherwise. According to their numbers, the 55-300 is optimized to favor the long end, so 300mm is actually the sharpest point in its focal length range, and at that point, it produces the same sharpness score as the 300/4! In a way, though, I'm not that surprised, because of how flawless the images I get from it at the long end. And the newer HD 55-300 is still better in performance. It is the sharpest at around f9.5 particularly at the corners. Maybe the newer HD WR version of the 55-300 is just as sharp as the old Tammy. Computer aided design, newer glass and coating technology may help. If only a kind Pentaxian can do a test. Regards. Bipin. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
