06-14-2010, 12:34 PM
Yes...someone did a "bokeh test" where they manually set the focus to 1 m and looked at the bokeh of background lights at f 2.2, 2.8, 4.0, etc. and showed that it was the same between 2.2 and 2.8 but different between 2.8 and 4.0. It also explains why the 2.0 and 2.8 resolution levels are the same the PZ Nikon mount test but different on the Canon mount test.
It's a shame that this lens has such major problems. It sounds perfect on paper (fast aperture, double working distance of the native Nikon 60), but the inability to reach maximum aperture makes the lens useless on Nikon mount <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='
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It's a shame that this lens has such major problems. It sounds perfect on paper (fast aperture, double working distance of the native Nikon 60), but the inability to reach maximum aperture makes the lens useless on Nikon mount <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='
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