The following is a comparison of the D800 and the D700. There are many updates to the D800.
What is the same:
Here are the two cameras imposed over eachother (the d800 is smaller)

via D700 vs D800 size difference | Flickr - Photo Sharing!
The D800:
The D700:
Feature | D800 | D700 |
Price | $2,999.95 | $2,699.95 |
Effective Pixels | 36.3 million | 12.1 million |
Sensor Size | 35.9mm x 24mm | 36.0mm x 23.9mm |
File formats | JPEG: JPEG-Baseline Compliant with fine (approx 1:4), Normal (approx 1:8) or Basic (approx 1:16) Compression NEF (RAW): lossless compressed 12 or 14 bit, lossless compressed, compressed or uncompressed TIFF (RGB) JPEG: JPEG-Baseline-Compliant; can be selected from Size Priority and Optimal Quality | Compressed 12/14-bit NEF (RAW, Compressed): approx. 45-60 percent Compressed 12/14-bit NEF (RAW, Lossless Compressed): approx. 60-80 percent JPEG: JPEG-Baseline Compliant; can be selected from Size Priority and Optimal Quality TIFF (RGB)Uncompressed 12/14-bit NEF (RAW) |
Storage media | CF, SD, SDHC, SDXC - 1 slot CF, 1 slot SD | CF - 1 slot |
Viewfinder coverage | 100% | 95% |
Viewfinder Magnification | 0.70x | 0.72x |
Top Continuous shooting | 4fps | 5fps |
Metering system | TTL exposure metering using 91,000-pixel RGB sensor | 1,005-pixel RGB sensor 3D Color Matrix Metering II |
ISO | ISO 100 - 6400 Lo-1 (ISO 50) Hi-1 (ISO 12,800) Hi-2 (ISO 25,600) | ISO 200 - 6400 Lo-1 (ISO 100) Hi-1 (ISO 12,800) Hi-2 (ISO 25,600) |
Focus modes | Auto AF-S/AF-C selection (AF-A) Continuous-servo (AF-C) Face-Priority AF available in Live View only and D-Movie only Full-time Servo (AF-A) available in Live View only Manual (M) with electronic rangefinder Normal area Single-servo AF (AF-S) Wide area | Auto Continuous-servo (C) Manual Manual (M) with electronic rangefinder Single-servo AF (S) |
White balance | Auto (2 types) Choose color temperature (2500K–10000K) Cloudy Direct Sunlight Flash Fluorescent (7 types) Incandescent Preset manual (up to 4 values can be stored) Shade | Auto (2 types) Auto (TTL white balance with 2,016-pixel RGB sensor) Cloudy Direct Sunlight Fine Tune by Kelvin color temperature setting (2,500 K to 10,000K) Flash Fluorescent (7 types) Incandescent Preset manual (up to 5 values can be stored) Seven manual modes with fine-tuning Shade |
Video | Yes - 1080p | No |
Monitor | 3.2 | 3.0 |
Playback functions | Auto Image Rotation Full-Frame and Thumbnail (4, 9, or 72 images or calendar) Histogram Display Image Comment Movie Playback Movie Slideshow Playback with Zoom Slideshow Highlights | Auto Image Rotation Full Frame Highlight Point Display Histogram Display Slideshow Thumbnail (4 or 9 segments) Zoom |
In camera image editing | Color Outline Color Sketch D-Lighting Distortion Control Edit Movie Filter Effects Fisheye Image Overlay Miniature Effect Monochrome NEF (RAW) Processing Perspective Control Quick Retouch Red-eye Correction Resize Selective Color Side-by-Side Comparison Straighten Trim Color Balance | Color Balance D-Lighting Filter Effects Image Overlay Monochrome Red-eye Correction Trim |
Interface | HDMI output: Type C mini-pin HDMI connector Headphone Connector NTSC Stereo Microphone Input Super Speed USB 3.0 | 10-pin Terminal HDMI Hi-speed USB NTSC PAL |
wi-fi | WT-4a, Eye-Fi | WT-4a |
Battery | EN-EL15 | EN-EL3e |
Battery life | 900 shots | 1000 shots |
Dimensions | Width 5.7 in. (144.78mm) Height 4.8 in. (121.92mm) Depth 3.2 in. (81.28mm) | Width 5.8 in. (147mm) Height 4.8 in. (123mm) Depth 3.0 in. (77mm) |
Weight | 31.7 oz. (900g) | 35 oz. (995g) |
What is the same:
- FX format
- 1/8000 fastest shutter speed
- Number of AF points: 9, 21, 51 and 51 (3D-tracking)
- CLS supported
- Virtual Horizon Camera Indicator
- Live view
- Built-in flash
- White balance bracketing (2 to 9 exposures)
Here are the two cameras imposed over eachother (the d800 is smaller)

via D700 vs D800 size difference | Flickr - Photo Sharing!
The D800:


The D700:

