Quote Originally Posted by Willie View Post
while some are successfully using the 720 version for 8x10 images.
Who is succesfully shooting 8x10 with the 720?

At one point I was going to acquire a 720, but as I wanted it also for 810 I made an extensive web search about that. What I found is comments like this one: "the 720 will cover 8x10, although I haven't tested to see how sharp the corners are".

But I found no reliable source about that, and of course no well scanned crop of the 810 corners.

One thing is using the 720mm succesfully in 810, for example in a shot with OOF corners, and another thing is that the T 720mm is a 810 lens. Those are different things.