Panasonic GX9 vs Sony A7S III

Let's take a deeper look at the Panasonic GX9 vs Sony A7S III, former is a Advanced Mirrorless while the other is a Pro Mirrorless by manufacturers Panasonic and Sony. There exists a noticeable gap between the resolutions of the GX9 (20MP) and A7S III (12MP) and the GX9 (Four Thirds) and A7S III (Full frame) have different sensor size.

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The GX9 was manufactured 3 years prior to the A7S III which is quite a sizable difference as far as technology is concerned. Both of the cameras have different body design with the Panasonic GX9 being a Rangefinder-style mirrorless camera and the Sony A7S III being a SLR-style mirrorless camera.

Before getting into a comprehensive comparison, here is a quick synopsis of how the GX9 scores against the A7S III for portability, imaging, features and an overall score.

Below is a sample of the gallery pictures for Panasonic Lumix DC-GX9 & Sony Alpha A7S III. The entire galleries are provided at Panasonic GX9 Gallery & Sony A7S III Gallery.

When you are looking to carry around your camera regularly, you need to consider its weight and dimensions. The Panasonic GX9 provides external dimensions of 124mm x 72mm x 47mm (4.9" x 2.8" x 1.9") with a weight of 407 grams (0.90 lbs) whilst the Sony A7S III has dimensions of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") accompanied by a weight of 699 grams (1.54 lbs).

Analyze the Panasonic GX9 vs Sony A7S III in our newest Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will vary dependant on the lens you have chosen at the time. Below is a front view scale comparison of the GX9 against the A7S III.

Considering dimensions and weight, the portability score of the GX9 and A7S III is 82 and 61 respectively.

More often than not, it is tough to imagine the contrast between sensor sizes purely by reading through specs. The image underneath might offer you a much better sense of the sensor sizes in the GX9 and A7S III.

As you can plainly see, both of these cameras provide different megapixel count and different sensor sizes. The GX9 because of its tinier sensor is going to make getting shallower DOF more challenging and the Panasonic GX9 will give extra detail due to its extra 8 Megapixels. Greater resolution can also allow you to crop photos more aggressively. The more aged GX9 is going to be disadvantaged when it comes to sensor innovation.