Canon 40D vs Nikon D3100

Let's take a deeper look at the Canon 40D vs Nikon D3100, one being a Advanced DSLR and the other is a Entry-Level DSLR by companies Canon and Nikon. There exists a huge gap among the sensor resolutions of the 40D (10MP) and D3100 (14MP) but both cameras provide the identical sensor measurements (APS-C).

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The 40D was revealed 4 years earlier than the D3100 and that is a fairly significant gap as far as camera technology is concerned. Both the cameras feature different body design with the Canon 40D being a Mid-size SLR camera and the Nikon D3100 being a Compact SLR camera.

Before getting straight to a step-by-step comparison, here is a concise summary of how the 40D matches up vs the D3100 in terms of portability, imaging, features and an overall rating.

Following is a sample of the gallery pics for Canon EOS 40D and Nikon D3100. The full galleries are viewable at Canon 40D Gallery and Nikon D3100 Gallery.

For anyone who is going to carry your camera frequently, you need to take into account its weight and proportions. The Canon 40D comes with physical dimensions of 146mm x 108mm x 74mm (5.7" x 4.3" x 2.9") along with a weight of 822 grams (1.81 lbs) and the Nikon D3100 has measurements of 124mm x 96mm x 75mm (4.9" x 3.8" x 3.0") accompanied by a weight of 505 grams (1.11 lbs).

Compare the Canon 40D vs Nikon D3100 in the all new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you have during that time. Here is a front view physical size comparison of the 40D versus the D3100.

Considering dimensions and weight, the portability score of the 40D and D3100 is 57 and 68 respectively.

Sometimes, it is very tough to envision the contrast in sensor sizing just by viewing technical specs. The photograph underneath may give you a more clear sense of the sensor dimensions in the 40D and D3100.

As you can tell, both of these cameras come with the identical sensor size but not the same resolution. You should expect to see the Nikon D3100 to render greater detail because of its extra 4 Megapixels. Greater resolution will let you crop images a good deal more aggressively. The older 40D will be disadvantaged in sensor innovation.