Sony a850 vs Sony a100

This is a full comparison between the cameras Sony a850 and Sony a100. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Sony.

Sony a850 were released 2009 and Sony a100 was released 2006. That is a 3 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a850 2009
Sony a100 2006

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Sony a850 has a "Sony Full Frame"-sensor while Sony a100 has a "Sony APS-C"-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 a850 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Sony a100 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5

** 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)

Resolution

Sony a850 has a 25 MP (Megapixels) resolution while Sony a100 has 10 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a850 25 MP
24385536 pixels
6048 x 4032
Sony a100 10 MP
10036224 pixels
3872 x 2592

Sony a850 has a 143 % 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

Sony a850 has a larger ISO-range than Sony a100. Sony a850 has an ISO range that stretches from 200 to 3200 while Sony a100 has 100 to 1600.

Camera ISO Range
Sony a850 200-3200
Sony a100 100-1600

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 a850
Lens compatibility chart for Sony a100

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a850 can shoot up to 3 pictures per seconds and Sony a100 can shoot up to 3 pictures per seconds.

Camera FPS (Frames per second)
Sony a850 3
Sony a100 3

Ability to record movies

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

Though, neither Sony a850 or Sony a100 can shoot movies so if that is a functionality that you are really looking for you should look elsewhere.

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.

Sony a850 weighs 895 gr (equal to 1.97 lb) which is 40% heavier than Sony a100 and its 638 gr (or 1.41 lb).

Camera Weight
Sony a850 895 gr
1.97 lb
Sony a100 638 gr
1.41 lb

Sony a850 vs Sony a100 Specs

Below you will find the complete and detailed technical specs for both Sony a850 and Sony a100, 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 a850
Sony a100
Name Sony a850 Sony a100
Manufacturer Sony Sony
Release Date and Price
Sony a850
Sony a100
Release Year 2009 2006
Release Date 2009-08-27 2006-06-05
MSRP 1999 USD 899 USD
Buy it today
Camera Type
Sony a850
Sony a100
Camera Type DSLR DSLR
Sensor
Sony a850
Sony a100
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 23.5 x 15.6 mm)
Sensor Type CMOS CCD
Resolution 6048 x 4032 pixels 3872 x 2592 pixels
Megapixels 25 MP 10 MP
Image Processor Bionz Bionz
Image
Sony a850
Sony a100
ISO Range 200 - 3200 100 - 1600
White Balance Presets 7 7
Custom White Balance Yes Yes
Image Stabilization Yes
(Sensor-Shift)
Yes
(Sensor-Shift)
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Sony a850
Sony a100
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Focus Points 9 9
Lens Mount Sony A

See Compatible Lenses
Sony A

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
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
Screen & Viewfinder
Sony a850
Sony a100
Articulated LCD Fixed No
Screen size 3” 2.5”
Screen dots 921600 230000
Touch screen No No
Screen type TFT Xtra Fine color LCD N/A
Live view No No
Viewfinder Type Optical (pentaprism) Optical (pentamirror)
Viewfinder Coverage 98% 95%
Viewfinder Magnification 0.74× 0.83× (0.55× 35mm equiv.)
Viewfinder Resolution N/A N/A
Photography features
Sony a850
Sony a100
Frames per second 3 fps 3 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/4000 seconds
Built-in Flash No Yes
Built-in Flash Range N/A N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No No
Metering modes Multi
Center Weighted
Spot
Multi
Center Weighted
Spot
Exposure Compensation +/- 3 (at 1/3 EV steps) +/- 2 (at 1/3 EV steps)
Videography features
Sony a850
Sony a100
Video recording No No
Video format N/A N/A
Video resolution N/A N/A
Built-in Microphone No No
Built-in Speakers No No
Storage
Sony a850
Sony a100
Memory Card Compact Flash
Memory Stick Pro Duo
Compact Flash
Connectivity
Sony a850
Sony a100
HDMI Output Yes No
Microphone Port No No
Headphone Port No No
Wireless No No
Remote Control Yes (Wired or Wireless (Optional)) Yes (Wire (Optional))
GPS No No
Body & Dimensions
Sony a850
Sony a100
Enviromentally sealed No No
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion NP-FM500H rechargeable battery & charger
Lithium-Ion (NP-FM55H) & charger
Battery Life (CIPA) 880 shots 750 shots
Width 156 mm 133 mm
Height 117 mm 95 mm
Depth 82 mm 71 mm
Weight 895 gram 638 gram