Like Anders Torger, I use a Linhof Techno with sliding back and bright ground glass to compose and focus with my Credo 60. Despite my initial reservations about the large size of the sliding back and small size of the image area on the GG (relative to 4x5" that I'm used to) I really like working this way. I use the Linhof Studio 12x loupe and it's easy to nail focus, although more difficult on extreme shifts. I demoed the CFV-50c before I got my Credo 60 to see how the live view worked–it worked very well–but for some reason I felt that looking at the screen on the back somehow removed me from the scene. I just wasn't used to the process of working that way.