> stopped down performance, I don't really understand - you mean that if the lens is stopped down, then the AF inaccuracy is neglible? If that's what you're saying, I can't agree. Something is either sharp or not. Even when stopped down, there's a definite plain of focus that you can see on the print.
> not on a tripod, ? What does it have to do with a tripod? Why no tripod for testing AF accuracy? > subject farther away than a few feet. But closer distances bring shallower depth of field and therefore are better for testing focusing accuracy - tested on a subject positioned 20m from the camera would be sensless IMO. Regards, Lukasz
