Originally posted by lemonade Hi,
some members reported with front focus/ back focus issues and need to spend a lot of time for body-len fine focus calibrations, can i ask how does this happened ? it is due to the knocking/dropped or loose parts from shutter/ mirror mechism from high speed burst ? If new camera tested with kit len is ok will it mean other most expensive lens will also be alrite ?
think its better to start a new topic for that.
it comes down to tolerances inside the camera autofocus and the lens, every camera with phase auto focus has this problem.
so that one lens focus perfectly doesn't mean other should, it just mean the tolerances don't amplify each other.