Nikon D3100 vs Sony A390

Here, we will be looking at the Nikon D3100 vs Sony A390, both Entry-Level DSLR digital cameras by rivals Nikon and Sony. The image resolution of the D3100 (14MP) and the A390 (14MP) is pretty similar and both cameras provide the identical sensor sizes (APS-C).

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The D3100 was introduced 5 months later than the A390 so they are both of a similar age. Both of the cameras feature the same body design (Compact SLR).

Before going into a step-by-step comparison, here is a simple summation of how the D3100 grades versus the A390 with respect to portability, imaging, features and an overall rating.

This is a preview of the gallery images for Nikon D3100 & Sony Alpha DSLR-A390. The whole galleries are available at Nikon D3100 Gallery & Sony A390 Gallery.

In case you're intending to carry your camera frequently, you will have to factor in its weight and dimensions. The Nikon D3100 comes with exterior dimensions of 124mm x 96mm x 75mm (4.9" x 3.8" x 3.0") along with a weight of 505 grams (1.11 lbs) and the Sony A390 has dimensions of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") accompanied by a weight of 549 grams (1.21 lbs).

Look at the Nikon D3100 vs Sony A390 in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will differ dependant on the lens you are utilizing at that time. Following is a front view physical size comparison of the D3100 vs the A390.

Considering size and weight, the portability score of the D3100 and A390 is 68 and 66 respectively.

Oftentimes, it is very difficult to see the gap between sensor sizing only by reading technical specs. The visual here will provide you a greater sense of the sensor dimensions in the D3100 and A390.

As you can tell, each of the cameras feature the identical sensor size and the exact same megapixels so you can expect similar quality of files but you really should factor the age of the products into consideration.