Aaronlim81
New Member
Hi guys, I realised that my sigma 18-200 lens is slightly focusig at the rear. I testes out sing a magazine with few sentences of wording, mounted my camera on a tripod and aim at the wording vertically at a 45 degree angle.SIded spot AF with evaluative metering with full auto mode on my 7D. I find that it focus more at the rear rather than at the center where I aime at. I understand that a micro adjustment whereby we can offset the rear/fore focusing. The question now is which one and how much offset should I set. There's adjustment on lens only and both body and lens. If I set all does it mean if I use another canon lens will it be affected?