Strengths: Low light capabilities, full frame sensor, clean high ISO settings, button placement, depth of focus, beautiful screen, customizable menus, focus tracking, metering.
Weaknesses: I don't use video, but I can see that some people might see this camera not having video capabilities as a weakness. Otherwise, I see none. Although I do think that it would have been cool if this camera had 8fps without the battery grip, and dual card slots. Dual card slots would have been awesome.
Bottom Line:
I dropped the hammer. I cut ties with DX (crop sensor). And I did it. I went full frame. I could tell you about the high ISO capabilities, the larger view finder, the low light ability, the amazing depth of focus, the fast response time, the well place buttons, the user friendliness, the customizable menus and buttons. But I won't bore you... unless I just did. Hold this camera and prepared to have your mind BLOWN.
Strengths: Compact- for carrying into the backcountry.
Durable
Full continuous shooting at 14-bit RAW
FX Full frame sensor for older Nikon wide angle lenses
Ergonomically well designed
Weaknesses: If it has any, it would be that it doesn't shoot as high FPS as the D300, but this is made up for with the fact that it shoots 14-bit RAW at full speed 5 FPS.
No Video
Bottom Line:
I've owned this camera since March and I have to say that after using the D200 and D300, this is by far the best digital camera that I've ever owned. As a full time pro, I need gear that works- i.e. that gets me the shot and stands up to abuse.
Since I bought it, the D700 has become my number 1 body- it's my Go-To camera for almost every shooting application. It's ergonomically well designed, feels even better than the D300 in my hands, has high ISO sensitivity, 14-bit RAW capabilities and it has the FX sensor so my wide angle glass is wide angle again, after years of using DX sensor cameras.
The best all around pro quality DSLR that Nikon has made to date.
Awesome body for pros or high end enthusiasts who want a camera that does the job and stands up to the test.
Strengths: Picture quality - The 700's photos seem sharper and better balanced than the D200's. When I pull them into my digital image software, I have very little to edit exposure wise and sharpening is sometimes not even necessary at all (!)
Full frame - The D700's is not technically a true 3/2 radio like the 35mm camera's 36mm x 24mm format, but the sensor is really close, supposedly 36mm x 23.9mm (Did someone screw up the design requirements..? It sure makes you think so). I really missed capturing wide angles - getting the D700 made me realize the grass really * is * greener on the other side. Being mostly a landscape photographer, I can now get the whole scene in without having to walk backwards to the edge of the street (or sometimes a cliff). Glad to be back in the full frame world.
Autofocus - Simply better than previous cameras I've used. I would call this incremental improvement because it can still get confused on very plain white subjects, but it's good. The tracking is also much better. I trust it enough to use it with sports and model shooting where I couldn't trust my previous DSLR.
Dynamic Range - Digital cameras have big time problems with dynamic range, causing burn out in bright areas and dark-as-mud densities in the shadows. The D700 is better with this and uses something called active "D-Lighting" that lets you select the amount of dynamic range adjustment on the images. You have the choice of intensity or an Auto setting. You can see the difference, though it is not a miracle worker and you still have to be careful, esp on bright sunny days.
Menu - A nice improvement over the D200's. Things seem better organized and it has a configurable screen called MyMenu for adding and subtracting your own favorites. The 700 also has a button on its back to show you all your current exp settings on the LCD screen, excellent for night shooting when setting up.
Construction - Have already been caught in a sand storm, and the 700 came out of it in very good condition. I notice a slight bit more resistance when turning the power knob, but otherwise, it's fine.
Eyelet Curtain - The 700 has a curtain that you can engage to prevent stray light from entering into the eyelet, which can possibly fool your meter or fog your image.
Flash - Handy built-in flash (YES, it is good to have this, because you don't always have your big bulky SB with you). Easy ability to add or subtract power to the flash. Good results (for an on-camera flash). Wireless trigger "Commander" mode.
In-Camera editing - Not something you do seriously, as software is much more powerful. But when you're sitting somewhere after the shoot and are struck by the need to be creative, it does the trick. This creates a duplicate image BTW, not affecting the original image.
Weight and Size - I was expecting it to be bigger and heavier than the D200, potentially bad because the 200 was big enough. The D700 seems almost exactly the same size and weight as the 200, which is acceptable.
Noise - Seems quieter than some other DSLRs.
Battery Life - Seems better than the D200's.
View Live - It works, for those who want it (to me, it's just a waste of energy).
LCD Screen - Big enough and very bright and detailed.
Speed - Very good picture quality at high ISOs. Almost no difference between shooting 200 and say 800. Very reasonable quality at the higher ISOs of ~ 2000 to 3200. Have not tried its max value 6400 yet: it can actually go even higher if you want, with a grain/color warning from Nikon (same when setting slower than 200 ISO).
Weaknesses: The D700 does so much so well that it's hard to find weaknesses, but here's a few wishes:
Viewfinder - I think its specs say 95%: I really wish it showed 100% of the frame in the viewfinder. Even the D300 shows more than 95%.
No Voice Memo - Wow I wish the 700 had this... But you have to bump up to the D3 for it.
Memory - Only uses CF Type 1 memory cards. The cheaper D300 uses both Type 1 and Type 2.
No Video mode - If the lower-end D300 can have that, why not the D700? But this doesn't bother me as I don't 'think' video when shooting still photos. (Besides, without auto focus on video, DSLR video is very limited.)
Lens - There are very few modern full-frame (FX) lenses out there. The D700 auto detects DX lenses and switches to that mode whenever one is mounted, but that of course negates the purpose of buying the D700.
Bottom Line:
Bought the D700 because I needed a full (35mm) frame (FX) digital SLR. Plus I wanted a little better dynamic range than the D200 offered, which I owned.
The D700 is a very solid, well-rounded camera, and you would be very hard-pressed to find any major deficiency! Besides the price there's almost no reason not to get it if you need a full frame DSLR. The only reason I could see you going in another direction is to get an "S" version which allows for insanely high ISO values, which you might want if are a serious sports or low-light nature photographer.
Strengths: 1) Image quality
2) Speed (8 frames per second with vert grip and EN-EL4 battery)
3) Accurate focus and meter systems
4) Great low light performance at price point (D3s now trumps the D700 at the high end).
5) Can be relatively compact when accessories are removed
6) Durable magnesium construction
7) Large size with grip -- fits my large hands very comfortably.
Weaknesses: 1) Heavy -- it's a piece of pro equipment and built to handle heavy use -- but can be pretty heavy when shooting 8-10 hours a day. ;)
Bottom Line:
I'll mention right off that I love this body. I shoot and edit hundreds of frames everyday on this camera and love the image quality in the images. The low light light (high ISO) performance is awesome for bodies in this price range. The image quality is as good or better than the 5DmkII in every situation.
Strengths: Build quality is excellent, it is compatible with the whole of my Nikon system. It also uses the same sensor as D3 in a better sized body, and is good enough for regular Professional use.
Weaknesses: Quite heavy in use, but much lighter than a D3. The dedicated function button is a little close to the depth of field button.
Bottom Line:
A fine Camera for low light situations where a tripod is not available.