I have just aquired a roll of Konica IR750 35mm for my course project. I am rating it at iso 100 (approx f5.6 @1/60th according to my camera) but am a bit concerned about this focus shift as my lenses (Olympus OM) don't have a IR mark.

My 28mm probably won't be too much of a problem because of its large depth of field but i was hoping to take some shots using a 70mm and a 200mm as well. Does the shift pull the focal point towards the camera or away?