13Promet
Well-known
I am not sure I understand what you mean. The GR has an 18mm (28mm equiv) lens on a cropped sensor. When are you going to be using autofocus? Everything is already in focus. You set it and forget it.
Not if you're shooting at close distance (0.7 to 1.5m), which is pretty common with 28mm equiv. in street photography.
I too will only upgrade from II to III for the improved AF, which is rpetty frustrating of the current model (sometimes even with good light)while most of my cameras for street p. are manual focus, but much faster to set distance compared to the GR.