Quote Originally Posted by verney View Post
Distance is measured from the lenses aperture blades (not shutter even though it's almost the same) to ground glass when bellows are racked all the way back.
You mean the bellows and lens have to be placed on the bed's slide/rails (just at it's beginning), not in the box?

If so (see the picture, the back base of the bellows/lens arm is placed at the beginning of the slde/rails) than the minimum distance from the front surface of ground glass to the lens blades is about 60mm.

If I rack the bellows a bit back, to have the lens blades right at the beginning of the rails, than the distnce shorten to 48-50mm.