Nikon 17-55mm f/2.8G AF-S DX IF-ED

NickG: Easily the best DX lens there is. I've rented this lens a couple times from BL and really need to just pony up and buy it (no offense BL!) The sharpness is incredible at nearly all apertures across nearly the entire image. Wide open the corners fall off a bit, but 98 times out of 100 you won't notice. It's a hefty pro lens, so be prepared to literally lug this thing around. Especially if you're used to just popping on a 35 or 50 prime. Be prepared for looks and questions from strangers too, if you're not shooting for work, it's quite noticeable particularly when the hood is on. It's worth the effort though, it'll probably end up being my main lens when I finally get around to buying it, perfect street photography lens for DX shooters. Highly recommended!