Sony A7S vs Sony A390

Its time to take a more detailed look at the Sony A7S versus Sony A390, former being a Pro Mirrorless while the latter is a Entry-Level DSLR and they are both sold by Sony. The image resolution of the A7S (12MP) and the A390 (14MP) is pretty close but the A7S (Full frame) and A390 (APS-C) use totally different sensor dimensions.

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The A7S was brought out 3 years later than the A390 and that is a fairly big difference as far as camera tech is concerned. Each of the cameras come with different body type with the Sony A7S being a SLR-style mirrorless camera and the Sony A390 being a Compact SLR camera.

Before diving straight into a comprehensive comparison, below is a brief summation of how the A7S matches up vs the A390 when considering portability, imaging, features and an overall grade.

This is a preview of the gallery images for Sony Alpha A7S & Sony Alpha DSLR-A390. The entire galleries are viewable at Sony A7S Gallery & Sony A390 Gallery.

For anyone who is intending to lug around your camera often, you will want to take into account its weight and proportions. The Sony A7S features outer 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 A390 has measurements of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") with a weight of 549 grams (1.21 lbs).

Contrast the Sony A7S versus Sony A390 in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will change dependant on the lens you select at the time. The following is the front view over all size comparison of the A7S and the A390.

Using size and weight, the portability grade of the A7S and A390 is 77 and 66 respectively.

Often, it's hard to visualise the contrast in sensor measurements only by researching a spec sheet. The photograph here will offer you a far better sense of the sensor measurements in the A7S and A390.

As you can see, both the cameras posses different resolutions and different sensor measurements. The A7S due to its bigger sensor will make getting shallow DOF less difficult and the Sony A390 will result in extra detail having its extra 2MP. Higher resolution will help you crop shots somewhat more aggressively. The younger A7S is going to have a benefit in sensor technology.