So, I got my D300 a couple weeks ago and I'm trying to weed out all the crappy equipment I was using with my D100. A new wide angle is next on my list. Now, I don't want to be spending 1500 bones on a lens, but I don't want a cheap lens plagued by soft focus, flares, and chromatic aberrations. I've searched around, looking everywhere I can think of, but I just can't find what I'm looking for. Somewhere in the 16mm range on the lower end of the zoom, but no more than 18 on the low end. High end; 50mm or less. And f2.8 throughout the range at the minimum. It doesn't even have to be nikon. Sigma will be fine as long as the aforementioned problems aren't an issue with the off-brand lens. So, what do you guys have? And thanks for the help.