Panasonic G5 vs Sony A7R III

The following is a extensive review of the Panasonic G5 and Sony A7R III, one is a Entry-Level Mirrorless and the other is a Pro Mirrorless by competitors Panasonic and Sony. There is a crucial difference among the image resolutions of the G5 (16MP) and A7R III (42MP) and the G5 (Four Thirds) and A7R III (Full frame) have different sensor sizes.

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The G5 was unveiled 6 years prior to the A7R III which is a fairly serious gap as far as camera tech is concerned. Both of these cameras have the same body design (SLR-style mirrorless).

Before diving straight to a complete comparison, here is a quick summation of how the G5 matches up versus the A7R III for portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Panasonic Lumix DMC-G5 and Sony Alpha A7R III. The full galleries are provided at Panasonic G5 Gallery and Sony A7R III Gallery.

For those who are planning to travel with your camera, you should factor in its weight and measurements. The Panasonic G5 features external measurements of 120mm x 83mm x 71mm (4.7" x 3.3" x 2.8") accompanied by a weight of 396 grams (0.87 lbs) whilst the Sony A7R III has proportions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

Examine the Panasonic G5 and Sony A7R III in the new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary based on the lens you use at the time. The following is a front view measurement comparison of the G5 and the A7R III.

Taking into account size and weight, the portability rating of the G5 and A7R III is 74 and 63 respectively.

Usually, it's hard to imagine the difference in sensor dimensions merely by looking through technical specs. The image below will offer you a stronger sense of the sensor measurements in the G5 and A7R III.

As you have seen, each of the cameras provide different resolutions and different sensor dimensions. The G5 having a smaller sensor is going to make achieving shallow depth of field more challenging and the Sony A7R III will render more detail having an extra 26MP. Greater resolution will also enable you to crop photos more aggressively. The more aged G5 will be disadvantaged with regard to sensor tech.