Quote Originally Posted by karl View Post
Fujinon C 300mm f8.5 is a fine choice. Love mine.
I agree. It's flange back (true focusing distance) is the shortest of all the main 300mm choices (282.3mm). This allows me to focus closer than the other options on my Toyo 45AII. If you have limited bellows extension on your camera it might be something to consider.

Here is a table I found helpful.

http://www.ebonycamera.com/articles/lenses.html

Good luck!