Quote Originally Posted by Ambar View Post
It's a Componon-s. Just the one I was looking at to maybe buy new at BH.
Interesting and it would make sense that a 50mm would be optimized by design for greater magnifications.
Would a 90mm do a better job on 6x6 than a 80mm on a 6x7? Or are we starting to split hairs here? (Portuguese expression for this would be "looking for hairs on an egg".. Hahah!)
A Componon-S should be good.

As to whether a 90mm would do a better job on 6x6 than a 80mm on a 6x7 - the answer is yes, but you would really be "looking for hairs on an egg" in that case.

Speaking more practically, however, I think you will find that it is much easier to find a high quality 80mm lens at a reasonable price than it is to find a high quality 90mm lens at a reasonable price. There were a lot more of the 80mm lenses made and sold.

In fact, you may find it easier and cheaper to find a pair of high quality lenses - 80mm and 50mm - then a single high quality 90mm lens.

Or you may get lucky and find all three.