Nikon D5000 versus Nikon D3100?
D5000
Sensor Size = 15.8 x 23.6mm
Total Pixels = 12.9 million
Effective Pixels = 12.3 million
D3100
Sensor Size = 23.1 x 15.4mm
Total Pixels = 14.8 million
Effective Pixels = 14.2 million
The D3100 has more megapixels but the D5000 has bigger sensor.
I believe bigger sensor means better shooting in low light.
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Lets us just consider the still images… Mainly because that is the most important.
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D90 is already too high… So just between the D3100 and the D5000.
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please tell other important things to consider…
The bigger sensor is not THAT big either. It is just big enough to take care of the increased pixels.
Here is a side by side specs;
http://www.dpreview.com/...e_post.asp
Apart from specs, the advantage of D3100 is that it has been designed keeping the requirements and needs of absolute beginners in mind. It has a lot more functions and guides to help the user to use the DSLR with ease. It would replace both D3000 and D5000 to be Nikon's entry level camera.