Sigma SD1 vs Sony A390

Let's examine more closely at the Sigma SD1 and Sony A390, one is a Advanced DSLR and the latter is a Entry-Level DSLR by brands Sigma and Sony. The sensor resolution of the SD1 (15MP) and the A390 (14MP) is pretty similar and they come with the same exact sensor measurements (APS-C).

Photography Glossary

The SD1 was announced 2 months after the A390 which means that they are of a similar generation. Both cameras offer different body type with the Sigma SD1 being a Mid-size SLR camera and the Sony A390 being a Compact SLR camera.

Before we go in to a more detailed comparison, below is a quick introduction of how the SD1 scores versus the A390 in terms of portability, imaging, features and an overall mark.

Here is a preview of the gallery images for Sigma SD1 and Sony Alpha DSLR-A390. The whole galleries are viewable at Sigma SD1 Gallery and Sony A390 Gallery.

When you are looking to travel with your camera often, you should take into account its weight and measurements. The Sigma SD1 provides physical 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 A390 has proportions of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") accompanied by a weight of 549 grams (1.21 lbs).

Compare the Sigma SD1 and Sony A390 in the new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are utilising during that time. Following is the front view scale comparison of the SD1 vs the A390.

Taking into consideration size and weight, the portability grade of the SD1 and A390 is 77 and 66 respectively.

Generally, its tough to imagine the gap between sensor dimensions simply by reading a spec sheet. The image underneath should give you a better sense of the sensor sizes in the SD1 and A390.

Clearly, the 2 cameras enjoy the same exact sensor sizing albeit different MP. You should expect the Sigma SD1 to deliver extra detail with its extra 1MP. Higher resolution will also let you crop photographs far more aggressively.