If you are having trouble with your camera focusing in front or behind your intended autofocus point then you need to have the autofocus adjusted.
Helix Camera & Video can perform these adjustments for you so your camera and lens are in sync.
Bring your camera and lens to us with a fully charged battery and we will have them back to you in 24-48 hours.
Lens calibration is $65 per lens/camera pair.
Note: Not all cameras have the ability to fine tune the autofocus. Typically the only cameras that have this ability are the professional level cameras.