enasniearth
Well-known
"All the talk of having lenses collimated is a waste of time if the flange focal plane distance is not reset to factory spec ."
I don't really understand this yet. I thought lenses were collimated with the lens on the camera body? Some repair folks use a mirror and some load it with film? DAG actually takes test shots afterwards on film to see if he's got it right, which is one reason he takes so darned long. He said he'd done this with my body and lenses three times, without being quite satisfied with the results.
BTW, was I correct in thinking that RF Nikkors came from the factory calibrated for close focus at widest aperture, whereas Leica & Zeiss use 2.8?
Kirk
Dag does very nice work , every camera I received back from him was like new in operation .
On Dante Stella's site I believe he mentions that the Japanese manufacturers
Optimized for up close and wide open in lens design .
They also tested every lens that left the factory to keep quality and tolerances at their best .
The lens mount is attached to the body with 4 screws ,under the mount are small brass washers that are sized to set the distance from the lens mount to the film . This set infinity focus for the lenses .
Usually a repair person will check each lens at its infinity setting to first check that the mount is set properly , in some cases perhaps the mount will need reshimmed .
From there they can work to best set all the lenses for best possible
Performance .