leonasj wrote:
sorry,but i no see difference leica r lenses vs ,etc,70-200vr or (modern nikon) lens
I guess this is the most compact version of your sentence. There are certainly differences, both in rendering and other ways, even if you don't see them. Colours from Leica lenses are typically better than Canon or Nikkor lenses, and even than Zeiss lenses. The resolution is very high, although more subtle than in Zeiss lenses, but of course, purely for resolution or sharpness, you are right, there are some L or Nikkor lenses which are as sharp as some R lenses.
An intangible benefit of many Leica lenses is also their handling and build. Leica spends significant resources making compact lenses which handle very well. If you look at the Leica 180/2 vs. the Nikkor 200/2, it is *much* smaller, 500g lighter, and handles much better. The built-in hood, the real lens cap, and the shape where the hand holds it are much better designed, and for the tripod foot there is just no comparison, the Leica's is awesome and the Nikkor's is lacking, and of course the same is true for manual focus. The Leica is just butter smooth, unbelievable really for a lens of that size.
Don't get me wrong, Nikon makes some great lenses with top performance, but there *is* a difference.