>Do you think Nikon will continue to make a semi-pro DX body >in the future? After reading another post about the >hypothetical D600 FX body I'm beginning to think we'll never >see an upgrade to the D400 especially if the D600 is in the >same price range as the current D300s.
To me the answer is quite clear. If you look at Nikon's lens offerings, you will see that of about 72 lenses only about 10 are designated as DX lenses. Of these, only one lens, the 17-55/2.8 DX, can be considered to be in the same league as the FX zoom lenses, not to mention the fast primes. While the remaining DX lenses are all very good, it would make no sens to put any of them on a D800 or even a D700 type of body. Therefore, I see no reason for Nikon to develop a successor for a D300 type camera. The will probably continue to make DX lenses for use with the less expensive DX cameras. If this is true, it is a good idea to only buy FX lenses even if you have a DX body.