And now for my first post here... Does anyone have any experience with the Nikon 24-85mm AF-S on a D3 vs a 17-55mm f/2.8 D300? Other than the persistent f-stop range, I'm curious to see if full-frame offers comparable quality with this cheaper lens vs a DX frame with a higher quality one. Does anyone have any experience with both on their respective formats? Not looking for a 24-85 vs 17-55 on DX only. One lens on FX, the other on DX. All things being equal, f/2.8 itself isn't all that important to me. Photozone.de gave them both the same rating on optical quality, but this was solely on DX: http://www.photozone.de/Reviews/46-...5mm-f35-45g-if-ed-review--test-report?start=1 - 24-85 f/3.5-4.5 http://www.photozone.de/Reviews/46-...-s-17-55mm-f28-g-if-ed-dx-review--test-report - 17-55 f/2.8 Thanks!