Sony T900 vs Sony A57

On this page, we are evaluating the Sony T900 vs Sony A57, one being a Ultracompact and the other is a Entry-Level DSLR and both are offered by Sony. There is a huge difference among the image resolutions of the T900 (12MP) and A57 (16MP) and the T900 (1/2.3") and A57 (APS-C) offer totally different sensor sizes.

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The T900 was introduced 4 years before the A57 and that is a fairly significant gap as far as camera tech is concerned. Both of these cameras have different body design with the Sony T900 being a Ultracompact camera and the Sony A57 being a Compact SLR camera.

Before we go into a detailed comparison, here is a quick summation of how the T900 scores against the A57 in the way of portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Sony Cyber-shot DSC-T900 and Sony SLT-A57. The whole galleries are viewable at Sony T900 Gallery and Sony A57 Gallery.

When you are aiming to carry your camera often, you should think about its weight and dimensions. The Sony T900 features outside dimensions of 98mm x 58mm x 16mm (3.9" x 2.3" x 0.6") with a weight of 143 grams (0.32 lbs) while the Sony A57 has dimensions of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") accompanied by a weight of 618 grams (1.36 lbs).

Look at the Sony T900 vs Sony A57 in the all new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you select at the time. Here is a front view scale comparison of the T900 compared to the A57.

Taking into consideration size and weight, the portability grade of the T900 and A57 is 96 and 64 respectively.

Often, it is hard to see the gap in sensor sizing purely by researching specs. The photograph below should give you a better sense of the sensor dimensions in the T900 and A57.

All in all, both cameras provide different resolutions and different sensor sizing. The T900 using its smaller sensor will make getting shallow depth of field harder and the Sony A57 will render greater detail using its extra 4 Megapixels. Greater resolution will also let you crop pics more aggressively. The older T900 will be behind when it comes to sensor tech.