Panasonic GX7 vs Sony A7 III

Following is a detailed assessment of the Panasonic GX7 and Sony A7 III, former is a Advanced Mirrorless while the latter is a Pro Mirrorless by brands Panasonic and Sony. There is a sizable difference among the sensor resolutions of the GX7 (16MP) and A7 III (24MP) and the GX7 (Four Thirds) and A7 III (Full frame) come with different sensor dimensions.

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The GX7 was revealed 5 years prior to the A7 III which is a fairly significant difference as far as camera tech is concerned. Both cameras offer different body type with the Panasonic GX7 being a Rangefinder-style mirrorless camera and the Sony A7 III being a SLR-style mirrorless camera.

Before going straight into a step-by-step comparison, below is a simple view of how the GX7 scores against the A7 III in the way of portability, imaging, features and an overall score.

Following is a preview of the gallery images for Panasonic Lumix DMC-GX7 & Sony Alpha A7 III. The full galleries are viewable at Panasonic GX7 Gallery & Sony A7 III Gallery.

For anyone who is aiming to carry around your camera regularly, you will have to consider its weight and size. The Panasonic GX7 has got outside dimensions of 123mm x 71mm x 55mm (4.8" x 2.8" x 2.2") accompanied by a weight of 402 grams (0.89 lbs) and the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Take a look at the Panasonic GX7 and Sony A7 III in our brand new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change based on the lens you are employing at the time. Following is the front view dimensions comparison of the GX7 against the A7 III.

Factoring in size and weight, the portability score of the GX7 and A7 III is 81 and 63 respectively.

In many cases, it is very hard to imagine the gap in sensor sizes only by going through a spec sheet. The pic here will give you a greater sense of the sensor sizes in the GX7 and A7 III.

As you can see, both the cameras offer different megapixels and different sensor sizes. The GX7 using its smaller sensor is going to make shooting shallower DOF trickier and the Sony A7 III will provide extra detail because of its extra 8MP. Higher resolution can also let you crop shots a little more aggressively. The more aged GX7 will be behind with regard to sensor tech.