Kuzano

Yes.... one of the things we learned in film was that the movement from fixed lens camera's to interchangeable lenses introduced a new component in the relationship of the lens to the body.

That new relationship was the tolerance that had to be introduced into mass assembly line processes that allowed lenses to be easily mounted and removed from the body. The solution was to create a +/- tolerance into manufacturing.

That exists to this very day, and while the camera's are now computing and shifting the tolerance for EACH lens mounted (and only within the last very few years) it remains that calibration is not offered to calibrate lens elements within the lens... That is done by a highly qualified technician using a collimation bench in the event of lens disassembly and reassembly.

No... calibration at the user level is between the lens and the body... shifting the tolerance there, either manually by shimming the mount on the body or the lens. It now can be done computer managed by the camera, but a literal shift of the lens back and forth on the body, or in the sensor must take place. The lens alone is not usually the culprit.

Thank You.

jerryc41 Loc: Catskill Mts of NY

Thanks. Good article.

Jamers Loc: Michigan

:thumbup: