still its a lovely looking camera and for those that like 6x4.5 i would say its choice camera--enjoy...i enjoyed the pictures-fantasic! the back focus is wierd tho did you measure distance to cans ,i presume you did
Yes, measured from the film plane to the centre can. Could have been 2 or even 3 inches out.
I set my lens focus scale by finding a good focus at infinity and fitting the ring there, hoping that all other distances will be on. This time the results were poor so I went back and focussed at 6 or 7 feet and locked it up there, hoping that infinity will be ok. The test pic here is after that adjustment, so I am puzzled by the size of the error.
I will use it for now and include a few infintys shot wide open to check that the focus there is ok. At 10ft on the cans, the focus was acceptable over all the cans, so I guess that the focus at infinity will be good too.
I believe that there may be great variation according to where the ground glass screen is positioned for these tests, all vary slightly: across the rollers at each side of the gate, across the lowest part of the gate and across the channel at the top and bottom of the gate (this should be identical to the rollers, but ain't quite).
I've hit on a fair compromise, although perhaps long winded. Adjust following the results of tests like this. After this one, for example, I might set up the cam to show 5ft on the scale, mark it up, then refit the focus scale so it shows 5.5ft (also checking infinity at each stage).
I wouldn't do this normally but I feel that this one may be worth it.
Dave....