Fiddling to get all my astro cams correctly spaced for the Tak FSQ-85 Flattener (specifically for larger than APS-C sensors). The below is an aberration shot for the full-frame DSLR through the FSQ with the flattener.
Does this appear to be too far OUT as I suspect, or too far in? It seems pretty even in all the corners, so tilt can be ruled out. Tak is not exactly open with the spacing dimensions, as you are supposed to use their CA-35's and cam adaptors
Not me....
I later put the STF-8300 on, and that seemed spot on, so compared distanced to chip, shim thickness etc, and then removed one of the shims from the DSLR. I hope I went the right way! I use 1mm delrin shims.
Opinions appreciated on too far out or too far in.