Would a 210 f4.5 Xenar in Compund shutter cover 8x10 wide open when focusing at head & shoulders range? How about full standing bodylength range? No movements needed.

Darkening of the corners won't bother me, but I'm wanting to find out if the corners will go completely black/clear?

I read that it has a 255mm image circle (10 inches), Any ideas on what this would do at portrait range wide open? I've often heard Schneider is conservative when rating their their coverage circle. Anyone have experience with this lens on 8x10?