I thought I was done buying lenses. I had the best DX glass and didn't even think I needed FX. But they had to release a killer high ISO camera that shoots fast... Now that I have an FX camera, I'm back to re-shuffling my lens collection to accommodate the shift. What sucks is that I'm having to carefully craft my lenses to work in both DX and FX formats. I bet Nikon planned this all along! Having to think in FX and DX is a headache. Anybody in the transition right now? We should have a support group!