Quote:
Originally Posted by deejjjaaaa
loud and annoying sound from aperture in certain conditions... imagine such situation - you try to shoot w/ wider aperture under a bright sun... so parameters are for example, "A" mode, ISO160, f2 and exposure metered to 1/4000... camera can't keep f2 while the sensor is feeding EVF and/or LV otherwise you will not see anything - there is no global shutter, base ISO is too high, readout from sensor for EVF/LV is still 60fps... so camera has to stop the lens down a lot when sensor is feeding EVF/LV... now imagine that you are now making a shot, then camera opens PL25/1.4 aperture wide open to focus (and then adjusts for a shot unless you just focus) and then it has to stop it back down to resume feeding EVF/LV... and that cycle produces quite loud noise w/ PL25/1.4 (in my case GH2 and PL25/1.4)... on top of that PL25/1.4 has quite loud and unpleasant sound when AF for still shot (at least w/ fast focusing GH2 body - which apparently w/ 120fps readout for CDAF can move optics inside faster than older bodies)... so may be optics is great, but mechanics is BAD (sounds-wise... plus all those sounds tells about some extra mechanical wear and tear)
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I have not detected any annoying sound, in which operating conditions did you hear such a loud sound?