There's an interesting point coming out here, as it has in other posts in the past. Clearly a lot of people see very little difference in optical quality between the top makes of binoculars, the deciders tending to boil down to things like weight and colour-casting. Yet, as I said, my eyes definitely found the resolution of the Leica Trinovids and BNs much less razor-sharp than the Swarovskis. In fact, though the Leicas are sharp enough, I wouldn't call them razor sharp at all. Which makes me wonder whether it's the binoculars or whether it's my eyes. Do binoculars behave differently with different eyes?