[IMASA]

The Tamron is tops for bang for the buck as per all the reviews I have not read about the color problem, but I have read about some having focusing issues, as with most 3rd party lenses.

Still, I'm trying to avoid crop body lenses, just about all my lenses are crop body, minus my 50 and 90 primes. You might not get a full frame body now or next year, but who knows, 3-5 yrs down the line, you might be able to get a FF body for the price of a D300 or 50D. When I was starting out, I was so concerned about getting the ranges covered, which is why I bought a 18-200 as my first lens. Now I want something fast and good quality. I'd say most of my shots are in the 10-40 range, which is why I'm considering a 17-35 F2.8 and use a 50 prime when I need more range. So rather than a 17-55 F2.8 that's a crop lens, how about a 16-35 F2.8 with a 50 prime when you need more range. At least you get FF coverage. I have a Sigma 10-20 already so I've thought about getting a 24-70, however, that lens is so long and heavy that I doubt I'd enjoy bring it out with me for causal shooting and vacation use.