Nikon D800 vs Nikon D3x

This is a full comparison between the cameras Nikon D800 and Nikon D3x. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Nikon.

Nikon D800 were released 2012 and Nikon D3x was released 2008. That is a 4 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Nikon D800 2012
Nikon D3x 2008

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

Both these cameras have the same sorts of sensor (called "Nikon FX") which means that if you compare these cameras side by side the lenses will also have the same experienced focal length. Since both cameras have a Full frame sensor there will be no crop factor.

Camera Focal length, 50mm f/1.8 **
Nikon D800 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Nikon D3x 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Nikon)

Resolution

Nikon D800 has a 36,3 MP (Megapixels) resolution while Nikon D3x has 24,5 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Nikon D800 36,3 MP
36152320 pixels
7360 x 4912
Nikon D3x 24,5 MP
24385536 pixels
6048 x 4032

Nikon D800 has a 48 % larger resolution than Nikon D3x. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Nikon D800 has a larger ISO-range than Nikon D3x. Nikon D800 has an ISO range that stretches from 100 to 25600 while Nikon D3x has 100 to 6400.

Camera ISO Range
Nikon D800 100-25600
Nikon D3x 100-6400

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Nikon D800
Lens compatibility chart for Nikon D3x

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D800 can shoot up to 6 pictures per seconds and Nikon D3x can shoot up to 5 pictures per seconds.

Camera FPS (Frames per second)
Nikon D800 6
Nikon D3x 5

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

When comparing these two cameras there is only one of them that can shoot movies and that is Nikon D800. Unfortunately Nikon D3x does not support recording movies and movie clips.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Nikon D3x weighs 1260 gr (equal to 2.78 lb) which is 40% heavier than Nikon D800 and its 900 gr (or 1.98 lb).

Camera Weight
Nikon D800 900 gr
1.98 lb
Nikon D3x 1260 gr
2.78 lb

Nikon D800 vs Nikon D3x Specs

Below you will find the complete and detailed technical specs for both Nikon D800 and Nikon D3x, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product
Nikon D800
Nikon D3x
Name Nikon D800 Nikon D3x
Manufacturer Nikon Nikon
Release Date and Price
Nikon D800
Nikon D3x
Release Year 2012 2008
Release Date 2012-02-07 2008-12-01
MSRP 2999 USD 7470 USD
Buy it today
Camera Type
Nikon D800
Nikon D3x
Camera Type DSLR DSLR
Sensor
Nikon D800
Nikon D3x
Sensor Size Full Frame (approx 36 x 23.9 mm)
Also known as "FX"
Full Frame (approx 36 x 23.9 mm)
Also known as "FX"
Sensor Type CMOS CMOS
Resolution 7360 x 4912 pixels 6048 x 4032 pixels
Megapixels 36,3 MP 24,5 MP
Image Processor EXPEED 3 EXPEED
Image
Nikon D800
Nikon D3x
ISO Range 100 - 25600 100 - 6400
White Balance Presets 12 12
Custom White Balance Yes Yes
Image Stabilization No No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW + TIFF
Optics & Focus
Nikon D800
Nikon D3x
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
LiveView
Focus Points 51 51
Lens Mount Nikon F

See Compatible Lenses
Nikon F

See Compatible Lenses
Focal Length Multiplier FX (Full frame)
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
FX (Full frame)
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Nikon D800
Nikon D3x
Articulated LCD Fixed Fixed
Screen size 3,2” 3”
Screen dots 921000 920000
Touch screen No No
Screen type TFT Color LCD with 170 degrees wide-viewing angle Super Density TFT color LCD with wide-viewing angle
Live view Yes Yes
Viewfinder Type Optical (pentaprism) Optical (pentaprism)
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.7× 0.7×
Viewfinder Resolution N/A N/A
Photography features
Nikon D800
Nikon D3x
Frames per second 6 fps 5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/8000 seconds
Built-in Flash Yes No
Built-in Flash Range 12 meters N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Spot
Average
Multi
Center Weighted
Spot
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV, 1 EV steps) +/- 5 (at 1/3 EV, 1/2 EV, 1 EV steps)
Videography features
Nikon D800
Nikon D3x
Video recording Yes No
Video format MPEG4
H.264
N/A
Video resolution 1280 x 720
1920 x 1080
N/A
Built-in Microphone Yes No
Built-in Speakers Yes No
Storage
Nikon D800
Nikon D3x
Memory Card Compact Flash
Compact Flash
Connectivity
Nikon D800
Nikon D3x
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Optional with Nikon Wireless Transmitter for D800 (WT-4A)
No
Remote Control Yes (Optional, wired or wireless) Yes
GPS Yes
Optional with GP-1
Yes
Optional through GP-1
Body & Dimensions
Nikon D800
Nikon D3x
Enviromentally sealed Yes Yes
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion EN-EL15 rechargeable battery & charger
Lithium-Ion EN-EL4a rechargeable battery & charger
Battery Life (CIPA) 900 shots 4400 shots
Width 146 mm 160 mm
Height 123 mm 157 mm
Depth 82 mm 88 mm
Weight 900 gram 1260 gram