I am looking to purchase a D700 ( I own a D200) in the future. I also own a Nikkor 70-200/ 2.8 AF-S lens. I was told by a shop that if i use the 70-200 AF-S with a D-700 it will "reduce" my resolution in half to 5mp. Is this true? Are there any issues with using the D700 with the 70-200? I know that I will get 70-200 versus 105-300 since it is a full frame camera.