Nikon D5100 SLR Camera

Nikon D5100 has the same sensor with Nikon D7000 (that can produce images equivalent to a camera D7000). The sensor is newer and better than the sensor in the Canon 600D. So when using the same lens, the result is better Nikon D5100.

Nikon D5100

 
Image quality at high ISO (usually used in a dark place) is also better, especially at ISO 1600 and 3200. Moreover, both cameras have difficulties to overcome noise / spots on the photograph.

One of the benefits of Nikon D5100 is the effect of HDR (High Dynamic Range) is the camera will automatically take two images and then combine them into one image with bright dark detail photo more interesting. and also often have a high-resolution swivel LCD. 
Nikon D5100 has the advantage in auto focus when activating live view. Like the Nikon D3100 and D7000, D5100 features auto focus continuous or continuous. Nikon calls this the auto focus AF-F. How it works is when the camera detects the subject is not in focus, the camera will try to find the subject position and relock it. But this is not very practical because in the video there will be a  gaps between focused and unfocused. Looks like the manual focus would still be best if you want to record video with a DSLR camera.

The advantages of Nikon D5100 :

• Image quality is very good in light or dark conditions.
• Price on the market is cheaper.
• Effects like HDR, color sketch, interesting and stimulating creativity.

The disadvantages of Nikon D5100 :

•   There is no auto focus motor in the camera body
•   The interface is less well & need to go into the menu to replace the function of popular
•   Unable to set the exposure manually when recording video