Canon 40D vs Olympus E-3

Here, we are matching up the Canon 40D versus Olympus E-3, both Advanced DSLR digital cameras by competitors Canon and Olympus. The sensor resolution of the 40D (10MP) and the E-3 (10MP) is fairly similar but the 40D (APS-C) and E-3 (Four Thirds) offer totally different sensor sizes.

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The 40D was unveiled 3 months earlier than the E-3 so they are of a similar age. Both the cameras feature the same body design (Mid-size SLR).

Before delving right into a step-by-step comparison, here is a short view of how the 40D grades against the E-3 when considering portability, imaging, features and an overall score.

Below is a sample of the gallery pictures for Canon EOS 40D & Olympus E-3. The full galleries are provided at Canon 40D Gallery & Olympus E-3 Gallery.

In case you're aiming to carry around your camera, you will need to factor its weight and volume. The Canon 40D has got physical dimensions of 146mm x 108mm x 74mm (5.7" x 4.3" x 2.9") with a weight of 822 grams (1.81 lbs) and the Olympus E-3 has sizing of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") and a weight of 890 grams (1.96 lbs).

Look at the Canon 40D versus Olympus E-3 in our completely new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change based on the lens you use at the time. Below is a front view scale comparison of the 40D compared to the E-3.

Taking into consideration size and weight, the portability score of the 40D and E-3 is 57 and 56 respectively.

In many cases, its tough to see the gap between sensor sizes purely by reviewing specs. The image underneath will help give you a clearer sense of the sensor dimensions in the 40D and E-3.

All in all, each of the cameras feature the identical resolution but not the same sensor sizes. The 40D uses the larger sensor which is going to make obtaining shallower DOF simpler.