Sony A55 vs Sony A57

Let's look a little more in depth at the Sony A55 vs Sony A57, both Entry-Level DSLR cameras and they are both built by Sony. The image resolution of the A55 (16MP) and the A57 (16MP) is fairly comparable and they come with the exact same sensor dimensions (APS-C).

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The A55 was introduced 3 years prior to the A57 and that is a fairly serious gap as far as camera tech is concerned. Both cameras come with the identical body type (Compact SLR).

Before diving through a full comparison, below is a quick introduction of how the A55 matches up against the A57 with regard to portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Sony SLT-A55 and Sony SLT-A57. The whole galleries are available at Sony A55 Gallery and Sony A57 Gallery.

When you are planning to carry your camera, you will want to consider its weight and proportions. The Sony A55 offers outside dimensions of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") and a weight of 500 grams (1.10 lbs) while the Sony A57 has measurements of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") along with a weight of 618 grams (1.36 lbs).

See the Sony A55 vs Sony A57 in the all new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ based on the lens you choose at the time. Below is the front view measurements comparison of the A55 and the A57.

Considering size and weight, the portability rating of the A55 and A57 is 67 and 64 respectively.

Generally, it is difficult to visualize the gap in sensor sizing purely by seeing specifications. The visual below might offer you a more clear sense of the sensor dimensions in the A55 and A57.

To sum up, both of those cameras have got the exact same sensor measurements and the same exact resolution and you should expect comparable quality of files but you should take the release date of the cameras into account. The older A55 will be behind with regard to sensor innovation.