Originally Posted by
Kevin Crisp
I am a little embarrassed to fully explain why I am asking but I will. I was making a list of all my LF lenses for insurance purposes and figured I'd clean them as I went. A few required removal from the shutter to clean the inner element as there was some haze present. When I got done I see this spacer sitting on the counter. It had to be from a Copal 0 lens, it had to be one I took out of the shutter, which narrowed it down to the point where I was almost sure where it came from. It doesn't really fit the Nikkor front element but is a nice fit for the step on the back element. I have a vague recollection of this being there on this lens, which I had to fully disassemble when I bought it due to some fungus which thankfully left no permanent etching. So anyway, I thought I'd ask.
It has been my experience that shims are more likely a creature of wide angles, and that 0.002 inches of spacing in a longer focal length would not make a difference in a photo. I've used a loop looking at the aerial image with this one with and without the shim and I honestly don't see a difference.
Anyway, thanks to those of you who took the time to check. I'll probably run a test with the AF resolution chart and some film just to be safe.
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