Originally posted by ogl Very low QC of DA20-40.
What sample size are you using to justify this claim?
Originally posted by ogl fixed lenses has better corners sharpness
That is not what the resolution tests on Optyczne/Lenstip show.
While the DA 20-40 reaches a corner resolution of 40 lp/mm on the K-5,
both the DA 21 and DA 40 (<34 lp/mm on the K10) Limiteds fall short of that.
Even the FA 31 only makes it to 43 lp/mm.
(BTW, the English-language Lenstip version does not show the DA 40 Ltd.)
Originally posted by ogl DA20-40 is big puzzle, I had unpredictable AF even with K-5IIs.
Which AF method did you try?