true enough. I found 350D's viewfinder is small too (better than D70.). I am so bothered by that, since I use manual focus a lot. my copy of 17-40/4L has a back focus issue. I never bothered to return it. But I had to use manual focus. It is good during day time, say bright out there. But when time approching dusk, it gets really bad. not to mention night, it was a nightmare. Obviously, it is something to do with the max aperture of lenses.
Why does Agua want manual focus? Nikon has never had this problem. A friend of mine uses Nikon D70, now D70s after firmware upgrade, I played with his camera for a long time, I have never discovered any problems in this regard. But those lenses are slower than my USM Lenses for sure.
