Hi!
I just got an APO Symmar 150mm in a Compur 0 shutter.
I have been checking the lens and realized that at f/5.6 it never gets wide open, I can still see the blades from the lens, they are out about 2mm on each side. The aperture never gets completely circular, it has curved edges.
Is that normal? does the lens aperture is actually less because of this?
Ignacio
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