Sony A7S vs Sony A900

Its time to take a more detailed look at the Sony A7S and Sony A900, one is a Pro Mirrorless and the other is a Advanced DSLR and both of them are created by Sony. There exists a sizeable gap among the sensor resolutions of the A7S (12MP) and A900 (25MP) but both cameras offer the identical sensor sizing (Full frame).

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The A7S was introduced 5 years after the A900 which is a fairly large gap as far as camera technology is concerned. The two cameras feature different body design with the Sony A7S being a SLR-style mirrorless camera and the Sony A900 being a Mid-size SLR camera.

Before going right into a more detailed comparison, here is a simple overview of how the A7S matches up against the A900 for portability, imaging, features and an overall score.

Here is a sample of the gallery pics for Sony Alpha A7S and Sony Alpha DSLR-A900. The whole galleries are available at Sony A7S Gallery and Sony A900 Gallery.

For anybody who is planning to carry around your camera frequently, you will need to factor its weight and dimensions. The Sony A7S features exterior measurements of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") along with a weight of 489 grams (1.08 lbs) while the Sony A900 has dimensions of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") accompanied by a weight of 895 grams (1.97 lbs).

Check the Sony A7S and Sony A900 in the latest Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at the time. Following is a front view physical size comparison of the A7S and the A900.

Taking into consideration dimensions and weight, the portability rating of the A7S and A900 is 77 and 54 respectively.

Normally, it is tough to picture the contrast in sensor sizes merely by researching technical specs. The picture here should provide you a much better sense of the sensor sizing in the A7S and A900.

As you have seen, both of the cameras feature the identical sensor size but different resolution. You should expect to see the Sony A900 to render greater detail using its extra 13 Megapixels. Greater resolution will also enable you to crop photos way more aggressively. The younger A7S should have an edge in sensor innovation.