Sigma SD15 vs Sony A900

The following is a complete comparison of the Sigma SD15 vs Sony A900, both Advanced DSLR cameras by manufacturers Sigma and Sony. There exists a crucial gap among the sensor resolutions of the SD15 (5MP) and A900 (25MP) and the SD15 (APS-C) and A900 (Full frame) use different sensor sizes.

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The SD15 was revealed 17 months after the A900 which makes the cameras a generation away from one another. Both cameras offer the identical body type (Mid-size SLR).

Before diving through a full comparison, below is a concise summary of how the SD15 grades against the A900 with regard to portability, imaging, features and an overall mark.

Here is a preview of the gallery photos for Sigma SD15 and Sony Alpha DSLR-A900. The full galleries are available at Sigma SD15 Gallery and Sony A900 Gallery.

When you are looking to travel with your camera, you're going to have to take into account its weight and proportions. The Sigma SD15 enjoys exterior dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") accompanied by a weight of 750 grams (1.65 lbs) while the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") with a weight of 895 grams (1.97 lbs).

Examine the Sigma SD15 vs Sony A900 in the latest Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you have chosen at that moment. The following is the front view scale comparison of the SD15 compared to the A900.

Taking into account dimensions and weight, the portability grade of the SD15 and A900 is 59 and 54 respectively.

Sometimes, its difficult to imagine the contrast in sensor dimensions merely by going through technical specs. The pic underneath may give you a better sense of the sensor sizes in the SD15 and A900.

As you have seen, both of those cameras offer different resolutions and different sensor dimensions. The SD15 using its smaller sensor is going to make achieving shallower DOF tougher and the Sony A900 will provide greater detail because of its extra 20MP. Higher resolution will allow you to crop photographs a little more aggressively. The fresher SD15 should have a benefit in sensor innovation.