Sigma Quattro vs Sony A55

In this write-up, we are reviewing the Sigma Quattro versus Sony A55, former is a Advanced Mirrorless while the other is a Entry-Level DSLR by companies Sigma and Sony. There is a considerable difference between the image resolutions of the Quattro (29MP) and A55 (16MP) but they feature the same exact sensor size (APS-C).

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The Quattro was unveiled 5 years after the A55 which is quite a large difference as far as tech is concerned. Both of the cameras offer different body type with the Sigma Quattro being a Rangefinder-style mirrorless camera and the Sony A55 being a Compact SLR camera.

Before going straight into a thorough comparison, below is a short highlight of how the Quattro grades against the A55 in regards to portability, imaging, features and an overall mark.

The following is a sample of the gallery pics for Sigma sd Quattro & Sony SLT-A55. The full galleries are provided at Sigma Quattro Gallery & Sony A55 Gallery.

If you are aiming to travel with your camera often, you need to consider its weight and size. The Sigma Quattro offers outer dimensions of 147mm x 95mm x 91mm (5.8" x 3.7" x 3.6") with a weight of 625 grams (1.38 lbs) and the Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") along with a weight of 500 grams (1.10 lbs).

Analyze the Sigma Quattro versus Sony A55 in our newest Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary dependant on the lens you have attached during that time. Below is the front view measurement comparison of the Quattro and the A55.

Factoring in size and weight, the portability rating of the Quattro and A55 is 63 and 67 respectively.

Usually, it is hard to envision the gap between sensor dimensions just by reading specs. The pic here may offer you a more clear sense of the sensor dimensions in the Quattro and A55.

All in all, both the cameras offer the same exact sensor sizing but not the same megapixels. You can expect to see the Sigma Quattro to offer you more detail having an extra 13MP. Greater resolution will also let you crop photos a little more aggressively. The more recent Quattro is going to have an edge with regard to sensor technology.