First impressions:
This camera is very user friendly, but it's a whole different beast compared to my K10D. There's a huge disconnect between the Pentax Control scheme (which I think is superior) and the Nikon Control Scheme. Aperture and Shutterspeed command dials were opposite (I changed them in the D700), there are only 4 shooting modes: (Manual, Aperture Priority, Shutter Priority, and Program Automatic); while the K10D has 9: (Manual, Shutter Priority, Aperture Priority, Sensitivity Priority (which would have been cool on the D700), Shutter & Aperture priority (which I think is unique to Pentax), Bulb, Flash Sync, Program Automatic, Green, User Manual). I also have noticed the lack of Shake Reduction since the K10D has it built in. Shutterspeeds that I used to hand hold on the K10D are really tough now, (and I was beginning to think that the SR on the K10D wasn't really working for me, guess I was just getting complacent).
But I do really like the ergonomics of the D700, at least as much as the K10D, the build quality is superior, not that the K10D was bad in this area but the D700 is much much stronger (and heavier). I can tell that even without the added shooting options, the D700 will be a much more versatile camera, it's so far ahead of the K10D in AF speed and ISO IQ that it isn't even funny. Those were the two most limiting aspects of the K10D in my mind, and now we've leapfrogged to the top of the hill in those areas, it's shocking how big of a difference there is. With the K10D I could only use ISO 800 if I could absolutely nail the exposure, but with the D700 I don't even have to think about using 1600 since it looks about like 400 on the K10D did.
The Autofocus speed and accuracy is astounding, even in dim lighting and with a non AF-S lens (85 f/1.8) the camera obtains focus almost instantly. The Pentax oftentimes struggled in anything but bright light, often refusing to lock focus at all.
Anyway, I've been very busy the past few days with other things so I haven't gotten a chance to get out and really use the camera, but as soon as I do I'll post images.
I've got to sort out upgrading to Lightroom 2, Lightroom 1 won't support the D700's .NEF files.
SLC