Sigma SD1 vs Sony TX7

Below, we are evaluating the Sigma SD1 versus Sony TX7, one is a Advanced DSLR and the other is a Ultracompact by competitors Sigma and Sony. There is a huge difference between the sensor resolutions of the SD1 (15MP) and TX7 (10MP) and the SD1 (APS-C) and TX7 (1/2.4") feature different sensor measurements.

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The SD1 was launched 9 months after the TX7 which means that they are of a similar generation. Both of these cameras come with different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony TX7 being a Ultracompact camera.

Before diving through a comprehensive comparison, below is a quick synopsis of how the SD1 grades vs the TX7 in regards to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Sigma SD1 and Sony Cyber-shot DSC-TX7. The complete galleries are viewable at Sigma SD1 Gallery and Sony TX7 Gallery.

If you're looking to carry around your camera, you'll have to consider its weight and proportions. The Sigma SD1 features outside dimensions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") accompanied by a weight of n/a grams (0.00 lbs) whilst the Sony TX7 has measurements of 98mm x 60mm x 18mm (3.9" x 2.4" x 0.7") along with a weight of 149 grams (0.33 lbs).

See the Sigma SD1 versus Sony TX7 in the new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary based on the lens you select during that time. Here is the front view dimension comparison of the SD1 compared to the TX7.

Looking at size and weight, the portability grade of the SD1 and TX7 is 77 and 95 respectively.

Oftentimes, it's tough to picture the contrast between sensor sizes just by checking technical specs. The picture underneath will provide you a far better sense of the sensor sizes in the SD1 and TX7.

As you can tell, each of these cameras have got different megapixel count and different sensor sizes. The SD1 due to its larger sensor is going to make achieving shallow depth of field easier and the Sigma SD1 will give extra detail utilizing its extra 5MP. Greater resolution will also make it easier to crop images much more aggressively. The fresher SD1 should have a benefit with regard to sensor tech.