Sony a850 vs Nikon D90

This is a full comparison between the cameras Sony a850 and Nikon D90. We compare them by looking at the categories you see below.

Sony a850

Nikon D90

Manufacturing

Sony a850 is manufacturered by Sony but Nikon D90 is from Nikon. Both Sony and Nikon are well known brands though.

Sony a850 were released 2009 and Nikon D90 was released 2008. That is a 1 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Sony a850	2009
Nikon D90	2008

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 Nikon D90 has a "Nikon DX"-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
Nikon D90	75 mm Nikon DX 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)
Camera selection can affect the focal length (Nikon)

Resolution

Sony a850 has a 25 MP (Megapixels) resolution while Nikon D90 has 12,3 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
Nikon D90	12,3 MP 12212224 pixels 4288 x 2848

Sony a850 has a 100 % larger resolution than Nikon D90. 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 D90 has a larger ISO-range than Sony a850. Nikon D90 has an ISO range that stretches from 200 to 6400 while Sony a850 has 200 to 3200.

Camera	ISO Range
Sony a850	200-3200
Nikon D90	200-6400

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 a850
Lens compatibility chart for Nikon D90

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 Nikon D90 can shoot up to 4,5 pictures per seconds.

Camera	FPS (Frames per second)
Sony a850	3
Nikon D90	4,5

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 D90. Sadly, the Sony a850 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.

Sony a850 weighs 895 gr (equal to 1.97 lb) which is 27% heavier than Nikon D90 and its 703 gr (or 1.55 lb).

Camera	Weight
Sony a850	895 gr 1.97 lb
Nikon D90	703 gr 1.55 lb