Sigma DP1s vs Sony A55

Let's look much closer at the Sigma DP1s vs Sony A55, one being a Large Sensor Compact and the other is a Entry-Level DSLR by rivals Sigma and Sony. There exists a huge gap between the resolutions of the DP1s (5MP) and A55 (16MP) but they use the exact same sensor dimensions (APS-C).

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The DP1s was revealed 10 months before the A55 and they are both of a similar generation. Both of these cameras come with different body type with the Sigma DP1s being a Large Sensor Compact camera and the Sony A55 being a Compact SLR camera.

Before we go straight into a full comparison, below is a quick summation of how the DP1s grades versus the A55 with regard to portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Sigma DP1s and Sony SLT-A55. The full galleries are provided at Sigma DP1s Gallery and Sony A55 Gallery.

When you are looking to carry your camera often, you're going to have to factor in its weight and measurements. The Sigma DP1s offers outside measurements of 109mm x 60mm x 31mm (4.3" x 2.4" x 1.2") having a weight of 270 grams (0.60 lbs) whilst the Sony A55 has proportions of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") accompanied by a weight of 500 grams (1.10 lbs).

Take a look at the Sigma DP1s vs Sony A55 in the latest Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will change depending on the lens you are using at the time. Here is the front view measurement comparison of the DP1s and the A55.

Taking into consideration dimensions and weight, the portability score of the DP1s and A55 is 90 and 67 respectively.

Quite often, it is hard to imagine the gap between sensor sizing simply by checking specs. The photograph below might provide you a much better sense of the sensor sizing in the DP1s and A55.

As you can plainly see, each of these cameras have got the exact same sensor measurements but different MP. You should anticipate the Sony A55 to resolve more detail because of its extra 11MP. Greater resolution will make it easier to crop images much more aggressively. The older DP1s is going to be disadvantaged in sensor technology.