Sigma SD1 vs Sony A550

Here, we are evaluating the Sigma SD1 vs Sony A550, former being a Advanced DSLR while the other is a Entry-Level DSLR by rivals Sigma and Sony. The sensor resolution of the SD1 (15MP) and the A550 (14MP) is very close and both cameras boast the identical sensor dimensions (APS-C).

Pentax 17 Pre-Orders Outperform Expectations by a Landslide

The SD1 was introduced 10 months later than the A550 which means that they are both of a similar age. Both the cameras feature different body design with the Sigma SD1 being a Mid-size SLR camera and the Sony A550 being a Compact SLR camera.

Before getting right into a more detailed comparison, here is a concise overview of how the SD1 matches up vs the A550 for portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Sigma SD1 & Sony Alpha DSLR-A550. The whole galleries are available at Sigma SD1 Gallery & Sony A550 Gallery.

If you're intending to carry your camera frequently, you will have to consider its weight and size. The Sigma SD1 provides physical 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 A550 has specifications of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") accompanied by a weight of 632 grams (1.39 lbs).

Check the Sigma SD1 vs Sony A550 in our brand new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary dependant on the lens you use at the time. The following is a front view overall size comparison of the SD1 and the A550.

Factoring in size and weight, the portability score of the SD1 and A550 is 77 and 63 respectively.

Oftentimes, it's tough to see the gap in sensor sizing just by looking through specs. The photograph underneath might give you a much better sense of the sensor measurements in the SD1 and A550.

All in all, both of the cameras feature the identical sensor size but not the same MP. You can expect to see the Sigma SD1 to render more detail using its extra 1 Megapixels. Greater resolution will enable you to crop pics way more aggressively. The younger SD1 will have an advantage with regard to sensor tech.