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03-14-2010, 07:49 AM   #1
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OrenMc's Avatar

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Pins on lenses designation question?

I just purchased a set of Rokunar PKA AF extension tubes and I can change the aperture of the lens with the camera but I'm not getting a reading on the cameras top LCD, All I get this that infamous F---. I can't seem to find the diagram for the pin designation either.
I love the ability to change the aperture with the camera but since the camera isn't reading the proper aperture what kind of exposer am I going to get? Should I use the green button in M mode or will I be alright in AV which I primarily use most of the time?
I have tried cleaning them but to no avail so far. I really haven't played around with them too much yet. I just would like to know what pins I need to be more concerned with.

Thank you

03-14-2010, 11:38 AM   #2
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