SimonMaddock
18-Feb-2022, 04:19
Hello Sinar lovers
I have one Apo Sironar-S 210 on a Sinar DB board and a Nikkor-W 210 in a copal 1 shutter. I'd like to have it the other way around.
The Sironar has a shim and I'm not sure how to think around this. Is the shim for correcting the element group spacing in that particular mount, or are the mount (db/copal) tolerances tight enough so that I can switch the lens+shim between the mounts without noticing a difference?
Ofc I could burn through a box of film to test this, but I'd rather not. I also want to know the basic theory behind this.
I hope my question makes sense.
I have one Apo Sironar-S 210 on a Sinar DB board and a Nikkor-W 210 in a copal 1 shutter. I'd like to have it the other way around.
The Sironar has a shim and I'm not sure how to think around this. Is the shim for correcting the element group spacing in that particular mount, or are the mount (db/copal) tolerances tight enough so that I can switch the lens+shim between the mounts without noticing a difference?
Ofc I could burn through a box of film to test this, but I'd rather not. I also want to know the basic theory behind this.
I hope my question makes sense.