Quote Originally Posted by jeffreyg View Post
Several years ago I used some Fujichrome readyloads with a 545 back with no problems; focusing as I would with film holders. I focused on the groundglass. They weren't double side. I generally stop down so if there was a focusing issue it wasn't obvious to me. The images were very sharp.

http://www.jeffreyglasser.com/
The 545 holder I have works fine with the double sided Readyloads. I have seen no focus issues with this combination. I have the newer 545 (the one with the built in timer).