Sigma SD1 vs Sony TX20

In this write-up, we will be evaluating the Sigma SD1 vs Sony TX20, former is a Advanced DSLR while the latter is a Ultracompact by manufacturers Sigma and Sony. The resolution of the SD1 (15MP) and the TX20 (16MP) is relatively similar but the SD1 (APS-C) and TX20 (1/2.3") possess different sensor size.

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The SD1 was unveiled 17 months earlier than the TX20 which makes the cameras a generation away from one another. The two cameras offer different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony TX20 being a Ultracompact camera.

Before we go in to a detailed comparison, below is a concise highlight of how the SD1 grades against the TX20 in regards to portability, imaging, features and an overall score.

This is a preview of the gallery photos for Sigma SD1 & Sony Cyber-shot DSC-TX20. The full galleries are available at Sigma SD1 Gallery & Sony TX20 Gallery.

For anyone who is planning to carry around your camera regularly, you are going to need to factor its weight and measurements. The Sigma SD1 has got external measurements 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) and the Sony TX20 has proportions of 96mm x 56mm x 18mm (3.8" x 2.2" x 0.7") along with a weight of 133 grams (0.29 lbs).

Look at the Sigma SD1 vs Sony TX20 in our newest Camera plus Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary based on the lens you have during that time. Following is the front view scale comparison of the SD1 compared to the TX20.

Taking into consideration dimensions and weight, the portability grade of the SD1 and TX20 is 77 and 96 respectively.

More often than not, it can be hard to imagine the difference between sensor sizes only by reviewing technical specs. The image here might offer you a much better sense of the sensor sizing in the SD1 and TX20.

As you can tell, both cameras offer different megapixel count and different sensor sizes. The SD1 having a bigger sensor is going to make shooting bokeh less difficult and the Sony TX20 will deliver greater detail having an extra 1 Megapixels. Higher resolution will also help you crop shots a little more aggressively. The more aged SD1 is going to be disadvantaged when it comes to sensor tech.