Thanks! I get that. My subjective impression is that the difference is not focus but it could be other aspects of perceived sharpness like edge effects or contrast or something else. It's hard to find anything that looks out of focus ( blurred ) on prints of more stopped down photos. The effect is hard to see when you look at little details in the print, but more of an overall impression. But I can imagine a tiny bit of blurry could be hard to spot in a detail, but give an overall impression of "less sharp". Also, these are not big prints ( mostly 5x7 and about ~6x9 prints ).