I recently got back into DSLR photography after a few years off. Just picked up a used (but pretty new, only 6 months old and 2500 clicks) 5D2 and the accompanying 24-105mm. Lens is a UZ06xx which if I'm right means it was manufactured in June 2011.
I took it out for a shoot and came home to some pretty disappointing results (everything was very very soft). After some research I found out it's a pretty common issue and to correct it with AF microadjust.
Long story short, a micro adjustment of +20 is giving me the best results, but that also leaves me wondering if it would be even better if the camera could adjust to more than +/- 20. Luckily I'm getting good results across the entire focal range with +20.
I currently live in Sydney Australia and there is a Canon service center in town. Should I take the lens in for service/calibration? If the adjustment needed was say +/- 10 I would be ok with it, but since I had to MA all the way to the end of the spectrum it makes me wonder. How much can I expect to pay for a calibration? Maybe I could even have it done free since it's so extreme?
I'll attach a 100% center crop of 0 and +20 MA. The focus point is on the "5". Shot at 70mm, 3.5m from the target. Tripod, remote release.
Also, is this the "fault" of the lens or can the camera have something to do with this as well?