Honest question...I've found quite a few photographers I know have less than stellar vision, myself in particular. I'm only 16.5, but I've already got -2.5 in my left eye -2.75 in my right, and I'm going to have a MAJOR prescription change in the next week or so to at least -2.75 left -3.25 right I think. I will have a change just about every year by about .25-.5. My F3's VF and school have really reinforced this. Looking in the VF I can't read the shutter speed display in many cases with my right eye! My left does a lot better... and for MF, I really need it. Particularly on my D70. In fact I think I can place the blame entirely on my D70 whatever time it doesnt spend glued to my VF, it spends glued on teh computer screen. So how about you, how bad are your eyes?