Sigma SD15 vs Sony TX20

Below is a detailed review of the Sigma SD15 vs Sony TX20, one being a Advanced DSLR and the latter is a Ultracompact by manufacturers Sigma and Sony. There exists a big gap among the resolutions of the SD15 (5MP) and TX20 (16MP) and the SD15 (APS-C) and TX20 (1/2.3") boast different sensor sizes.

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The SD15 was introduced 24 months prior to the TX20 which makes them a generation apart from one another. Both the cameras have different body design with the Sigma SD15 being a Mid-size SLR camera and the Sony TX20 being a Ultracompact camera.

Before we go right into a in depth comparison, here is a concise synopsis of how the SD15 scores vs the TX20 when considering portability, imaging, features and an overall grade.

Following is a preview of the gallery images for Sigma SD15 and Sony Cyber-shot DSC-TX20. The whole galleries are available at Sigma SD15 Gallery and Sony TX20 Gallery.

For anyone who is aiming to lug around your camera, you should factor its weight and measurements. The Sigma SD15 has outside measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs) and the Sony TX20 has proportions of 96mm x 56mm x 18mm (3.8" x 2.2" x 0.7") and a weight of 133 grams (0.29 lbs).

Check the Sigma SD15 vs Sony TX20 in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you are employing at the time. Following is a front view measurement comparison of the SD15 and the TX20.

Taking into account dimensions and weight, the portability rating of the SD15 and TX20 is 59 and 96 respectively.

Normally, it's difficult to imagine the gap in sensor measurements only by checking out specifications. The photograph below will give you a much better sense of the sensor measurements in the SD15 and TX20.

Plainly, both cameras have different megapixel count and different sensor measurements. The SD15 having a bigger sensor is going to make achieving shallow depth of field easier and the Sony TX20 will provide extra detail using its extra 11MP. Higher resolution will also let you crop pictures a bit more aggressively. The older SD15 will be disadvantaged in sensor tech.