Sony a99 vs Nikon D3x

This is a full comparison between the cameras Sony a99 and Nikon D3x. We compare them by looking at the categories you see below.

Manufacturing

Sony a99 is manufacturered by Sony but Nikon D3x is from Nikon. Both Sony and Nikon are well known brands though.

Type of camera

Sensors / crop factor

Even though the camera sensors might be called differently they are both considered Full frame which means that the focal length of the lenses is not affected. There is no crop factor on any of these cameras and sensors.

** 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 (Sony)
Camera selection can affect the focal length (Nikon)

Resolution

Sony a99 has a 24 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:

Nikon D3x has a 2 % larger resolution than Sony a99. 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

Sony a99 has a larger ISO-range than Nikon D3x. Sony a99 has an ISO range that stretches from 100 to 25600 while Nikon D3x has 100 to 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 Sony a99
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. Sony a99 can shoot up to 6 pictures per seconds and Nikon D3x can shoot up to 5 pictures per seconds.

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 Sony a99. 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 55% heavier than Sony a99 and its 812 gr (or 1.79 lb).

Sony a99 vs Nikon D3x Specs

Below you will find the complete and detailed technical specs for both Sony a99 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	Sony a99	Nikon D3x
Name	Sony a99	Nikon D3x
Manufacturer	Sony	Nikon
Release Date and Price	Sony a99	Nikon D3x
Release Year	2012	2008
Release Date	2012-09-12	2008-12-01
MSRP	2799 USD	7470 USD
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Camera Type	Sony a99	Nikon D3x
Camera Type	SLT	DSLR
Sensor	Sony a99	Nikon D3x
Sensor Size	Full Frame (approx 36 x 24 mm)	Full Frame (approx 36 x 23.9 mm) Also known as "FX"
Sensor Type	CMOS	CMOS
Resolution	6000 x 4000 pixels	6048 x 4032 pixels
Megapixels	24 MP	24,5 MP
Image Processor	Bionz	EXPEED
Image	Sony a99	Nikon D3x
ISO Range	100 - 25600	100 - 6400
White Balance Presets	8	12
Custom White Balance	Yes	Yes
Image Stabilization	Yes (Sensor-Shift)	No
Image Stabilization CIPA Rating	0 stops	0 stops
Uncompressed format	RAW	RAW + TIFF
Optics & Focus	Sony a99	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	19	51
Lens Mount	Sony A See Compatible Lenses	Nikon F See Compatible Lenses
Focal Length Multiplier	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	Sony a99	Nikon D3x
Articulated LCD	Fully articulated	Fixed
Screen size	3”	3”
Screen dots	1229000	920000
Touch screen	No	No
Screen type	TFT Xtra Fine color LCD	Super Density TFT color LCD with wide-viewing angle
Live view	Yes	Yes
Viewfinder Type	Electronic	Optical (pentaprism)
Viewfinder Coverage	100%	100%
Viewfinder Magnification	0.71×	0.7×
Viewfinder Resolution	N/A	N/A
Photography features	Sony a99	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	No	No
Built-in Flash Range	N/A	N/A
External Flash	Yes	Yes
Self-Timer	Yes	Yes
Time-lapse	No	Yes
Metering modes	Multi Center Weighted Spot	Multi Center Weighted Spot
Exposure Compensation	+/- 5 (at 1/3 EV, 1/2 EV steps)	+/- 5 (at 1/3 EV, 1/2 EV, 1 EV steps)
Videography features	Sony a99	Nikon D3x
Video recording	Yes	No
Video format	MPEG4 H.264 AVCHD	N/A
Video resolution	1440 x 1080 1920 x 1080	N/A
Built-in Microphone	Yes	No
Built-in Speakers	Yes	No
Storage	Sony a99	Nikon D3x
Memory Card	Memory Stick Pro Duo SD/SDHC	Compact Flash
Connectivity	Sony a99	Nikon D3x
HDMI Output	Yes	Yes
Microphone Port	No	No
Headphone Port	No	No
Wireless	No	No
Remote Control	Yes (Wired or Wireless (Optional))	Yes
GPS	Yes Built-in	Yes Optional through GP-1
Body & Dimensions	Sony a99	Nikon D3x
Enviromentally sealed	Yes	Yes
Battery	Battery Pack	Battery Pack
Battery Details	Lithium-Ion NP-FM500H rechargeable battery & charger	Lithium-Ion EN-EL4a rechargeable battery & charger
Battery Life (CIPA)	500 shots	4400 shots
Width	147 mm	160 mm
Height	111 mm	157 mm
Depth	78 mm	88 mm
Weight	812 gram	1260 gram