Canon 7D MII vs Nikon D3100

Below, we will be looking at the Canon 7D MII and Nikon D3100, former being a Advanced DSLR while the latter is a Entry-Level DSLR by manufacturers Canon and Nikon. There is a considerable difference between the sensor resolutions of the 7D MII (20MP) and D3100 (14MP) but they feature the exact same sensor measurements (APS-C).

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The 7D MII was revealed 3 years later than the D3100 and that is quite a large difference as far as tech is concerned. Both of these cameras come with different body type with the Canon 7D MII being a Mid-size SLR camera and the Nikon D3100 being a Compact SLR camera.

Before going in to a step-by-step comparison, below is a short synopsis of how the 7D MII matches up vs the D3100 with regards to portability, imaging, features and an overall rating.

Here is a preview of the gallery images for Canon EOS 7D Mark II & Nikon D3100. The full galleries are available at Canon 7D MII Gallery & Nikon D3100 Gallery.

For anybody who is aiming to carry your camera frequently, you are going to need to factor in its weight and dimensions. The Canon 7D MII offers exterior measurements of 149mm x 112mm x 78mm (5.9" x 4.4" x 3.1") having a weight of 910 grams (2.01 lbs) whilst the Nikon D3100 has 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).

See the Canon 7D MII and Nikon D3100 in our completely new Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will change depending on the lens you are using during that time. Here is the front view size comparison of the 7D MII and the D3100.

Taking into account size and weight, the portability grade of the 7D MII and D3100 is 55 and 68 respectively.

In many cases, it's tough to picture the gap between sensor sizing simply by looking at a spec sheet. The graphic here might provide you a greater sense of the sensor measurements in the 7D MII and D3100.

As you can see, each of the cameras have got the exact same sensor measurements albeit different MP. You can expect the Canon 7D MII to give you extra detail because of its extra 6 Megapixels. Higher resolution can also help you crop photographs much more aggressively. The newer 7D MII provides a benefit in sensor innovation.