Sony a100 vs Nikon D810

This is a full comparison between the cameras Sony a100 and Nikon D810. We compare them by looking at the categories you see below.

Manufacturing

Sony a100 is manufacturered by Sony but Nikon D810 is from Nikon. Both Sony and Nikon are well known brands though.

Sony a100 were released 2006 and Nikon D810 was released 2014. That is a 8 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a100 2006
Nikon D810 2014

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Sony a100 has a "Sony APS-C"-sensor while Nikon D810 has a "Nikon FX"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Sony a100 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5
Nikon D810 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 (Sony)
Camera selection can affect the focal length (Nikon)

Resolution

Sony a100 has a 10 MP (Megapixels) resolution while Nikon D810 has 36 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a100 10 MP
10036224 pixels
3872 x 2592
Nikon D810 36 MP
36152320 pixels
7360 x 4912

Nikon D810 has a 260 % larger resolution than Sony a100. 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 D810 has a larger ISO-range than Sony a100. Nikon D810 has an ISO range that stretches from 64 to 12800 while Sony a100 has 100 to 1600.

Camera ISO Range
Sony a100 100-1600
Nikon D810 64-12800

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 a100
Lens compatibility chart for Nikon D810

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a100 can shoot up to 3 pictures per seconds and Nikon D810 can shoot up to 5 pictures per seconds.

Camera FPS (Frames per second)
Sony a100 3
Nikon D810 5

Ability to record movies

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

It is only one of these two cameras that support recording movies and movie clips and that is Nikon D810. Sadly, the Sony a100 does not support this.

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 D810 weighs 980 gr (equal to 2.16 lb) which is 54% heavier than Sony a100 and its 638 gr (or 1.41 lb).

Camera Weight
Sony a100 638 gr
1.41 lb
Nikon D810 980 gr
2.16 lb

Sony a100 vs Nikon D810 Specs

Below you will find the complete and detailed technical specs for both Sony a100 and Nikon D810, 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 a100
Nikon D810
Name Sony a100 Nikon D810
Manufacturer Sony Nikon
Release Date and Price
Sony a100
Nikon D810
Release Year 2006 2014
Release Date 2006-06-05 2014-06-26
MSRP 899 USD 3299 USD
Buy it today
Camera Type
Sony a100
Nikon D810
Camera Type DSLR DSLR
Sensor
Sony a100
Nikon D810
Sensor Size APS-C (approx 23.5 x 15.6 mm) Full Frame (approx 36 x 23.9 mm)
Also known as "FX"
Sensor Type CCD CMOS
Resolution 3872 x 2592 pixels 7360 x 4912 pixels
Megapixels 10 MP 36 MP
Image Processor Bionz EXPEED 4
Image
Sony a100
Nikon D810
ISO Range 100 - 1600 64 - 12800
White Balance Presets 7 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 a100
Nikon D810
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Focus Points 9 51
Lens Mount Sony A

See Compatible Lenses
Nikon F

See Compatible Lenses
Focal Length Multiplier APS-C Sensor (1.5x)
1.5x multiplier
Example:
24 mm becomes 36 mm
50 mm becomes 75 mm
100 mm becomes 150 mm
200 mm becomes 300 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 a100
Nikon D810
Articulated LCD No Fixed
Screen size 2.5” 3,2”
Screen dots 230000 1229000
Touch screen No No
Screen type N/A TFT-LCD (WRGB)
Live view No Yes
Viewfinder Type Optical (pentamirror) Optical (tunnel)
Viewfinder Coverage 95% 100%
Viewfinder Magnification 0.83× (0.55× 35mm equiv.) 0.7×
Viewfinder Resolution N/A N/A
Photography features
Sony a100
Nikon D810
Frames per second 3 fps 5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/8000 seconds
Built-in Flash Yes Yes
Built-in Flash Range N/A 12 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No No
Metering modes Multi
Center Weighted
Spot
Multi
Center Weighted
Highlight Weighted
Spot
Exposure Compensation +/- 2 (at 1/3 EV steps) +/- 5 (at 1/3 EV, 1/2 EV, 1 EV steps)
Videography features
Sony a100
Nikon D810
Video recording No Yes
Video format N/A MPEG4
H.264
Video resolution N/A 1280 x 720
1920 x 1080
Built-in Microphone No Yes
Built-in Speakers No Yes
Storage
Sony a100
Nikon D810
Memory Card Compact Flash
Compact Flash
SD/SDHC
Connectivity
Sony a100
Nikon D810
HDMI Output No Yes
Microphone Port No No
Headphone Port No No
Wireless No Yes
Optional via WT-5A or Eye-Fi
Remote Control Yes (Wire (Optional)) Yes
GPS No Yes
Optional with GP-1 or GP-1A
Body & Dimensions
Sony a100
Nikon D810
Enviromentally sealed No Yes
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion (NP-FM55H) & charger
EN-EL15 lithium-ion battery & charger
Battery Life (CIPA) 750 shots 1200 shots
Width 133 mm 146 mm
Height 95 mm 123 mm
Depth 71 mm 82 mm
Weight 638 gram 980 gram