Panasonic GX9 vs Sony A7 III

Below is a in depth analysis of the Panasonic GX9 versus Sony A7 III, former being a Advanced Mirrorless while the latter is a Pro Mirrorless by brands Panasonic and Sony. The sensor resolution of the GX9 (20MP) and the A7 III (24MP) is relatively similar but the GX9 (Four Thirds) and A7 III (Full frame) enjoy totally different sensor sizing.

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The GX9 was brought out within a month of the A7 III so they are both of a similar age. The two cameras come with different body type with the Panasonic GX9 being a Rangefinder-style mirrorless camera and the Sony A7 III being a SLR-style mirrorless camera.

Before going straight into a detailed comparison, below is a short overview of how the GX9 matches up versus the A7 III when it comes to portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Panasonic Lumix DC-GX9 & Sony Alpha A7 III. The entire galleries are provided at Panasonic GX9 Gallery & Sony A7 III Gallery.

In case you're looking to lug around your camera frequently, you'll need to factor its weight and proportions. The Panasonic GX9 offers exterior dimensions of 124mm x 72mm x 47mm (4.9" x 2.8" x 1.9") along with a weight of 407 grams (0.90 lbs) whilst the Sony A7 III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

Check out the Panasonic GX9 versus Sony A7 III in our newest Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary dependant on the lens you choose at that moment. Here is the front view sizing comparison of the GX9 versus the A7 III.

Taking into consideration size and weight, the portability grade of the GX9 and A7 III is 82 and 63 respectively.

Oftentimes, its difficult to visualise the gap between sensor measurements only by reading a spec sheet. The photograph here should provide you a clearer sense of the sensor dimensions in the GX9 and A7 III.

As you can see, both cameras have got different resolutions and different sensor measurements. The GX9 because of its tinier sensor will make getting shallower DOF more difficult and the Sony A7 III will deliver extra detail having its extra 4MP. Higher resolution will also enable you to crop photographs much more aggressively.