No, and that is exactly my point. It has been posited here that calibrating an out-of-tolerance body to a STANDARD would bring the combination of the the lens and body into acceptable (but not perfect) tolerance IF the lens also was within STANDARD tolerance. In fact, that's the way manufacturing is toleranced. The designer picks dimensions and tolerances that allow a combination of parts, when assembled, to still be within tolerance even if the tolerance of individual parts each goes in the opposite direction, creating the worst possible assembly in terms of the tolerance stack up. My body is very acceptable with 7 different L series lenses, although each needs some correction to be perfect. One lens, the 85mm F1.8 is at best, apparently barely within the acceptable limit as defined by Canon. I simply requested that they move it closer to the center of the acceptable STANDARD range. If I had done as you and others have suggested, I would have had one acceptable combination, but what about the other 7 lenses that were previoisly OK? MFA calibration allows the camera to be correctly/properly calibrated with each individual lens because it allows a seperate calibration for each. Now perhaps if I had sent all 8 lenses and the body to Canon, they would have stored a correction for each into a look-up-table so that each would be correct when mounted, or in other words, exactly what we do with MFA correction. If you send one lens and one body, you get ONE properly calibrated combination (assuming they survive shipment with no changes), but what happens when you change lenses?

That's the thing about tolerances. They are not exact. Both the lens and camera can be in the tolerance range with the lens at one end of the range and the camera at the other end. Neither has to be out of tolerance for a slight back or front focus to exist. That's the real reason for in camera MFA. Its not meant to just correct lenses that are out of spec. I have 4 Canon bodies and almost every one of my lenses will work a little differently depending on which body I mount them on. If I understand you correctly, it seems like your assuming the body or lens is out of tolerance. While that certainly is a possibility, that's generally not the main issue. You could take 10 L lenses and mount them on 10 different 5D Mark IVs and the results can vary significantly depending on which lens is mounted on which body.