Sigma SD1 vs Sony TX55

Its time to look a little more in depth at the Sigma SD1 vs Sony TX55, one is a Advanced DSLR and the other is a Ultracompact by rivals Sigma and Sony. The sensor resolution of the SD1 (15MP) and the TX55 (16MP) is very close but the SD1 (APS-C) and TX55 (1/2.3") have totally different sensor size.

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The SD1 was unveiled 10 months prior to the TX55 and they are of a similar generation. Both of the cameras have different body design with the Sigma SD1 being a Mid-size SLR camera and the Sony TX55 being a Ultracompact camera.

Before delving straight to a comprehensive comparison, here is a short summation of how the SD1 scores against the TX55 for portability, imaging, features and an overall score.

Following is a sample of the gallery pics for Sigma SD1 and Sony Cyber-shot DSC-TX55. The full galleries are viewable at Sigma SD1 Gallery and Sony TX55 Gallery.

For those who are going to carry around your camera regularly, you're going to have to think about its weight and size. The Sigma SD1 provides physical dimensions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") having a weight of n/a grams (0.00 lbs) whilst the Sony TX55 has specifications of 93mm x 54mm x 13mm (3.7" x 2.1" x 0.5") accompanied by a weight of 109 grams (0.24 lbs).

Check the Sigma SD1 vs Sony TX55 in the new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary based on the lens you are utilising at that moment. Underneath is a front view dimensions comparison of the SD1 compared to the TX55.

Taking into account size and weight, the portability rating of the SD1 and TX55 is 77 and 97 respectively.

Oftentimes, it is very difficult to envision the difference in sensor sizes just by looking through technical specs. The pic here may give you a greater sense of the sensor sizes in the SD1 and TX55.

As you have seen, both the cameras have different megapixel count and different sensor sizes. The SD1 using its larger sensor will make achieving shallow depth of field less difficult and the Sony TX55 will render greater detail having an extra 1MP. Greater resolution can also allow you to crop images a bit more aggressively. The more aged SD1 will be behind with regard to sensor innovation.