Hi
Has any body thought about fitting the new Canon 17mm shift lens onto a Mamiya 645? I have a 645D with a 17 Mpa Leaf Valeo back, and the with the image circle of the Canon being 67.2mm, this covers the approx 33 x 45 mm dimensions of the back nicely. I've noticed that the mirror lock-up deactivates the back so that it doesn't work, and I'm not sure why that is the case. Any thoughts?