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11-07-2012, 06:13 PM   #16
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Civiletti, Louicio,

You two are definitely "glass half full" kind of people, I like that!



11-07-2012, 06:57 PM   #17

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Location: Savannah, GA
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QuoteOriginally posted by phothog Quote

I zoomed the Zeiss chart on B&H photo and took a couple of snaps of it on my monitor, I can't say the results were conclusive, the center donut in one appeared to
be shifted slightly up but I'm not positive if it was just me trying to achieve the correct amount of focus blur.
Does the K-r have live view? Much easier to tell with live view and you can watch the screen as you unfocus. I've tried it with a few lenses I've been suspicious about, but it always remains perfectly circular with no elongation, just blurred (i.e. always passed the test) so I think it would be pretty obvious. But they say zoom lenses may fail anyway. Just take a picture of a newspaper or something flat focused on the center -- should be easy enough to tell. (You may lose edge sharpness, but it should be even on all sides.)
11-07-2012, 08:44 PM   #18
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I'll give that a try tomorrow, thanks for your help.


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