Upload & Sell: On
I have a D800 and D3s too. I use the 300 f2.8 (I did have the f4 until I finally saved enough for a used 2.8) with the 1.7 on the d800. The ability to crop with that camera is fantastic. It's like shooting with a 500 on the d3s, or better. Would I like to have a 500, sure. But I'm relatively satisfied for now. Maybe someday....
ETA Look at it this way. I can take a horizontal shot, just do a straight crop to vertical, and still have a roughly 15mp shot. Big enough for a really nice print.