Panasonic GH3 vs Sony A7S III

Below, we are evaluating the Panasonic GH3 and Sony A7S III, one is a Advanced Mirrorless and the other is a Pro Mirrorless by brands Panasonic and Sony. There is a significant difference between the image resolutions of the GH3 (16MP) and A7S III (12MP) and the GH3 (Four Thirds) and A7S III (Full frame) possess totally different sensor sizing.

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The GH3 was launched 8 years before the A7S III which is quite a sizable gap as far as tech is concerned. Both cameras come with the identical body type (SLR-style mirrorless).

Before going in to a comprehensive comparison, below is a concise overview of how the GH3 scores against the A7S III in terms of portability, imaging, features and an overall mark.

This is a sample of the gallery pics for Panasonic Lumix DMC-GH3 and Sony Alpha A7S III. The complete galleries are available at Panasonic GH3 Gallery and Sony A7S III Gallery.

If you're aiming to travel with your camera, you should take into account its weight and size. The Panasonic GH3 has external measurements of 133mm x 93mm x 82mm (5.2" x 3.7" x 3.2") accompanied by a weight of 550 grams (1.21 lbs) and the Sony A7S III has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") with a weight of 699 grams (1.54 lbs).

Look at the Panasonic GH3 and Sony A7S III in the new Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you have during that time. Underneath is the front view over all size comparison of the GH3 vs the A7S III.

Taking into consideration size and weight, the portability rating of the GH3 and A7S III is 66 and 61 respectively.

Often, it's hard to envision the gap between sensor dimensions just by reading specs. The pic below will offer you a stronger sense of the sensor sizing in the GH3 and A7S III.

As you can plainly see, both of these cameras have got different resolutions and different sensor dimensions. The GH3 featuring a tinier sensor will make achieving shallow DOF harder and the Panasonic GH3 will deliver more detail utilizing its extra 4MP. Greater resolution will also let you crop images much more aggressively. The more aged GH3 is going to be disadvantaged with regard to sensor tech.