That lens and body combination should be very accurate. The AF System is not dead on accurate every time. Some shots it may be a little in front, some a little in back and this seems more so on wider lenses or some zooms. But with a prime lens it should be very accurate. It will be more pronounced if you are shooting at F2.


I would test the combination out. There are many other threads on this site that go in to detail about doing an AF Microadjustment or testing a lens. Canon was so kind to give a tutorial on there new website:


Canon