I am looking for a little advice on a problem.
I have a Canon 7D whose focus has shifted abruptly. Most of my lenses used to microadjust between -5 to +3 and now they're all around +20 with some (like my Tokina 11-16) no longer able to find optimal focus anymore. While it is still usable for most lenses that I have, I have been pondering whether to send it back in for adjustment or invest the repair cost towards another body (perhaps a 6D). The shutter count from CanonEOSDitgitalInfo says that I have 15K on the shutter which is still pretty healthy. Since all of my lenses have shifted about the same amount in microadjust, I believe that the issue must be in the body. Is there a way to have Canon adjust the body rather than the lens (because if they match the lens to the body rather than the other way around, this will be a pointless endeavor...)?
What kind of cost will be involved and is it a reasonable investment in a 7D mark I? I don't want to drop $500 on this problem when that is about what the camera is worth, but I don't know how deep the rabbit hole goes at this point. Are there cheaper, reliable 3rd party repair outlets compared to going through Canon direct? Any other questions that I should be asking?
Thanks in advance.