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Forum: Pentax K-3 & K-3 II
06-07-2015, 02:24 PM
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actually with the 100mm I haven't seen the behaviour. If the effect is there with that lens it is really, really tiny. The DFA100 is just awesome.
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Forum: Pentax K-3 & K-3 II
06-07-2015, 02:22 PM
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ok, I reproduced it with my DA 50mm f1.8. It is a very minor dimming, easy to miss.
BUT: it also screws around with autofocus!
Started at f1.8 focused my computer monitor.
Scrolled up to f11 and observed the dimming effect.
Scrolled down to f1.8 and with the last step to f1.8 it defocused! The AF kicked in for a moment and everything was nice and blurry. What the hell?
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