Nikon D3100 vs Sony A68

Below, we will be analyzing the Nikon D3100 and Sony A68, both Entry-Level DSLR cameras by companies Nikon and Sony. There is a crucial difference among the image resolutions of the D3100 (14MP) and A68 (24MP) but they enjoy the exact same sensor measurements (APS-C).

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The D3100 was released 5 years prior to the A68 and that is a fairly serious gap as far as camera tech is concerned. Both of these cameras come with the identical body type (Compact SLR).

Before getting straight into a detailed comparison, below is a short introduction of how the D3100 matches up versus the A68 in the way of portability, imaging, features and an overall rating.

Here is a preview of the gallery images for Nikon D3100 and Sony SLT-A68. The complete galleries are provided at Nikon D3100 Gallery and Sony A68 Gallery.

In case you're planning to carry your camera regularly, you will need to factor its weight and volume. The Nikon D3100 enjoys exterior dimensions of 124mm x 96mm x 75mm (4.9" x 3.8" x 3.0") with a weight of 505 grams (1.11 lbs) and the Sony A68 has sizing of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 610 grams (1.34 lbs).

Check out the Nikon D3100 and Sony A68 in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you select at that moment. Underneath is the front view sizing comparison of the D3100 against the A68.

Using size and weight, the portability rating of the D3100 and A68 is 68 and 64 respectively.

Often, it is very tough to visualise the difference in sensor sizing simply by seeing technical specs. The graphic below will provide you a greater sense of the sensor dimensions in the D3100 and A68.

As you have seen, both of those cameras have got the exact same sensor measurements albeit not the same resolution. You should expect the Sony A68 to provide greater detail as a result of its extra 10MP. Higher resolution can also make it easier to crop photographs much more aggressively. The older D3100 will be disadvantaged with regard to sensor tech.