How would you convince your spouse that you needed a $3,000 camera when your D300 and D200 are in perfect working order?
I didn't try to convince her I needed a D800 only that I wanted to buy one. But my approach might require use of a time machine.
A few months after the D700 came out, I told her I was going to hold off upgrading my D200 for one more generation of FX dSLR's. So the conversation went something like:
Me: Nikon finally announced the new camera that I've been waiting to hear about. Her: Is it what you wanted? Me: Sort of. I was hoping for something in the 18-24 megapixel range. Her: And what does this one have. Me: 36. Her: And this is a problem how? Who are you going to order it from, and what camera are you getting rid of?
If you want to photograph a man spinning, give some thought to why he spins. Understanding for a photographer is as important as the equipment he uses. - Margaret Bourke-White