Olympus E-620 vs Sony A55

Here, we are analyzing the Olympus E-620 and Sony A55, both Entry-Level DSLR digital cameras by manufacturers Olympus and Sony. There is a substantial difference between the sensor resolutions of the E-620 (12MP) and A55 (16MP) and the E-620 (Four Thirds) and A55 (APS-C) have different sensor sizes.

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The E-620 was revealed 13 months prior to the A55 making them a generation apart from each other. Both of the cameras feature the same body design (Compact SLR).

Before we go into a full comparison, here is a short summary of how the E-620 grades vs the A55 in terms of portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Olympus E-620 & Sony SLT-A55. The full galleries are provided at Olympus E-620 Gallery & Sony A55 Gallery.

If you are planning to carry your camera frequently, you need to factor its weight and size. The Olympus E-620 offers external dimensions of 130mm x 94mm x 60mm (5.1" x 3.7" x 2.4") having a weight of 500 grams (1.10 lbs) while the Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") accompanied by a weight of 500 grams (1.10 lbs).

Analyze the Olympus E-620 and Sony A55 in our newest Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary depending on the lens you are utilizing at that time. Following is a front view sizing comparison of the E-620 against the A55.

Taking into account size and weight, the portability score of the E-620 and A55 is 71 and 67 respectively.

In many cases, it's hard to picture the difference between sensor sizing merely by going over a spec sheet. The visual below will help offer you a clearer sense of the sensor dimensions in the E-620 and A55.

As you can see, both the cameras feature different resolutions and different sensor sizing. The E-620 having a tinier sensor is going to make getting shallow depth of field harder and the Sony A55 will offer more detail because of its extra 4MP. Greater resolution can also let you crop images way more aggressively. The older E-620 is going to be behind with regard to sensor innovation.