Originally posted by fccwpe Exactly. As stated earlier there should be a menu option to force the assist to come on. Granted it's no use for distant objects, but I find the issue occurs only with light colored objects within 1.5 meters or so.
we wouldn't need it for distance object,as the increase in DOF will mask it...at a 40mm DOF i see the issue..at 90 mm DOF it goes away..so we are only missing it by a gnats cock..these two DOF measurements are at 50mm FL and 2.8 and 5.6 respectably
at FA 77 F1.8 at 3 metres { lets say the throw of the FAL} will have a DOF of 110mm plenty to mask the error..
so mate you have cracked it..all thats needed is the FAL to come on earlier..problem sorted...
the problem might be a issue if trying to focus a 200 mm at 4 metres as DOF is only 40mm, so in that case if outside the FAL youd need to stop down to ge the shot..F4 should do it