Nikon D3100 are placed into
Camera Digital SLR models small Nikon, it has size close to the camera before a D3000, but thicker than 1 cm, while the camera itself is lightweight to 30 g. The style of the battery. Camera is still traditional, but the buttons has been changed quite a bit more and new buttons added.
The exterior is different from the
D3000 are just above the rear of the camera. The top of the camera is Nikon D3100 Knob Drive mode or adjust the photographic method, isolated. This button adjusts the camera to shoot at a picture. Continuous shooting. Shooting delay (Timer) or Quiet mode, also known as the silent operation of imaging systems that are lighter than normal.

Button on the back of the camera, they had to change the button AF-L, AE-L is designed to swell up to the edge seems to use up The buttons on the left of the screen has been added keys from 4 to 5 button mouse button, they are still functions the same, just add a button i added also D3100 also has a 'lever' that took the use of open Close Live View, especially where it allows users to easily work with the LV and that this will be a lever for pressing the button to save the film that separates the specific It is very clear that convenience. Filming and the
D3100 can also focus on the track also.
For the Nikon D3100 that has changed a lot, such as the processors of its new EXPEED 2 and Sensor CCD with a 10 mega pixel has been used since the
D40X,
D60 and
D3000 that has been converted to. keep up with trends by size CMOS sensor 14.2 megapixel Nikon's own production does not use
Sony then.