Teleconvertors and flange distane (M42 -F mount)

Started 10 months ago | Discussions thread
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Teleconvertors and flange distane (M42 -F mount)
10 months ago

Hi all,
Ive recently purchased a D7100.
From my film days Ive got a few M42 lenses. Ive converted a Zeiss flek 35 to f mount by machining to correct the flange distance. Beautiful
I also have a couple of 135 primes, and a 3x tele convertor.
Just adding a M42-F convertor to the tele+ prime the combo still focuses to infinity. I wasnt expecting that. Can anyone explain please?

Dave

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