Sony A7S vs Sony a5100

Following is a detailed assessment of the Sony A7S versus Sony a5100, one is a Pro Mirrorless and the other is a Entry-Level Mirrorless and both are created by Sony. There is a big difference between the sensor resolutions of the A7S (12MP) and a5100 (24MP) and the A7S (Full frame) and a5100 (APS-C) use different sensor sizing.

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The A7S was announced 4 months before the a5100 so they are of a similar generation. Both the cameras come with different body type with the Sony A7S being a SLR-style mirrorless camera and the Sony a5100 being a Rangefinder-style mirrorless camera.

Before going in to a more detailed comparison, below is a concise overview of how the A7S matches up vs the a5100 in the way of portability, imaging, features and an overall score.

Following is a sample of the gallery pics for Sony Alpha A7S and Sony Alpha a5100. The whole galleries are available at Sony A7S Gallery and Sony a5100 Gallery.

When you are going to carry around your camera often, you will want to take into account its weight and size. The Sony A7S comes with external measurements of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") and a weight of 489 grams (1.08 lbs) and the Sony a5100 has specifications of 110mm x 63mm x 36mm (4.3" x 2.5" x 1.4") with a weight of 283 grams (0.62 lbs).

Check out the Sony A7S versus Sony a5100 in the new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change dependant on the lens you have attached at the time. Below is the front view sizing comparison of the A7S versus the a5100.

Taking into consideration size and weight, the portability grade of the A7S and a5100 is 77 and 89 respectively.

In many cases, it is very tough to picture the contrast between sensor sizes simply by reviewing technical specs. The image here may offer you a more clear sense of the sensor sizing in the A7S and a5100.

As you have seen, each of these cameras have got different megapixels and different sensor sizes. The A7S with its larger sensor is going to make achieving shallow depth of field easier and the Sony a5100 will deliver more detail with its extra 12 Megapixels. Greater resolution will also allow you to crop images much more aggressively.