Alex, help with a little test, would you? Set the *ist D to mtf (custom function 1), then test it outside in program mode on a day with good light. What f-stops do you get at different focal lengths? I got the following, which seemed odd:

16-28 mm. f4.0

35 mm. f4.5

45 mm. f5.6

I e-mailed Pentax USA to ask about this, but they are ignoring my query (as they have ignored most of my queries recently).

Anyone besides Alex who has the lens, your results on this test would be good to have also.

Thanks,

Joe

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