Sigma SD15 vs Sony A77

On this page, we are analyzing the Sigma SD15 versus Sony A77, both Advanced DSLR digital cameras by companies Sigma and Sony. There is a crucial difference between the image resolutions of the SD15 (5MP) and A77 (24MP) but both cameras boast the same sensor dimensions (APS-C).

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The SD15 was announced 20 months prior to the A77 making them a generation apart from each other. Each of these cameras have the same body design (Mid-size SLR).

Before we go into a comprehensive comparison, here is a quick summary of how the SD15 scores versus the A77 in terms of portability, imaging, features and an overall grade.

This is a sample of the gallery pictures for Sigma SD15 and Sony SLT-A77. The whole galleries are provided at Sigma SD15 Gallery and Sony A77 Gallery.

For anybody who is intending to lug around your camera regularly, you are going to need to factor its weight and size. The Sigma SD15 comes with physical measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") accompanied by a weight of 750 grams (1.65 lbs) and the Sony A77 has specifications of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") accompanied by a weight of 732 grams (1.61 lbs).

Take a look at the Sigma SD15 versus Sony A77 in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary based on the lens you choose during that time. Underneath is a front view scale comparison of the SD15 versus the A77.

Taking into consideration size and weight, the portability grade of the SD15 and A77 is 59 and 59 respectively.

Often, it's hard to visualise the gap between sensor measurements only by reviewing specifications. The graphic here will help provide you a greater sense of the sensor sizing in the SD15 and A77.

To sum up, the 2 cameras provide the same sensor dimensions but not the same MP. You should anticipate the Sony A77 to offer you extra detail with its extra 19MP. Greater resolution can also make it easier to crop pics more aggressively. The older SD15 is going to be disadvantaged when it comes to sensor innovation.