I can't believe it and I am very surprised - I just made today many tests with bracketing and manual exposure correction with my Pentax MZ-5N, Takumar SMC 300/4 lens and m42/K adaptor (original Pentax adaptor, made in Japan). The tests show me clearily that I MUST manually and every time correct exposure by exactly minus 1EV to achieve proper pictures! I have used AV priority and worked on diaphragme stopped down.
Have you encountered the same problem or my body just goes wrong???
I do not know if this is the same problem, but I have discovered the problem with Z-1p and M135/3.5 too. I have done a few tests and I am certain when this lens is used on the Z-1p, -2/3EV is required. I believe other K/M lenses have the same problem too.
regards, Alan Chan
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