I am new to LF. Today I purchased a new lens. It is a 90mm f:8 Ilex-Calumet. It seems to be a really nice lens, but I can't figure out the aperture. I have attached a photograph. The lens is f:8. The shutter aperture markings (copal-0)go down to below 5.6. There are two different aperture markings, one green and one white. The green goes to f:12.
When I open the aperture all the way, the little silver indicator knob goes well below the 5.6. When I close the aperture blades in the shutter until they just touch the circumference of the lens opening it reads 5.6. If I set the knob at f:8, the circumference of the blades is well smaller than the lens opening circumference (not the maximum opening).
So, seeing that I have an f:8 lens, how do the markings on the shutter correlate with actual aperture? When I take a spot meter reading and it says for example 1/250 sec @ f:16, do I set the aperture to f:16 and assume all will be well? This is confusing to me. I would appreciate your guidance!!!
Alexis
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