Panasonic G9 vs Sony A7 III

Following is a in-depth assessment of the Panasonic G9 and Sony A7 III, both Pro Mirrorless digital cameras by brands Panasonic and Sony. The sensor resolution of the G9 (20MP) and the A7 III (24MP) is relatively well matched but the G9 (Four Thirds) and A7 III (Full frame) boast totally different sensor sizing.

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The G9 was introduced 3 months earlier than the A7 III and they are of a similar generation. Both of these cameras feature the same body design (SLR-style mirrorless).

Before diving right into a in-depth comparison, here is a quick summation of how the G9 grades against the A7 III with regards to portability, imaging, features and an overall score.

Below is a preview of the gallery photos for Panasonic Lumix DC-G9 and Sony Alpha A7 III. The whole galleries are viewable at Panasonic G9 Gallery and Sony A7 III Gallery.

If you are aiming to carry around your camera regularly, you'll have to take into account its weight and volume. The Panasonic G9 features external measurements of 137mm x 97mm x 92mm (5.4" x 3.8" x 3.6") and a weight of 658 grams (1.45 lbs) and the Sony A7 III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Check out the Panasonic G9 and Sony A7 III in the latest Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change based on the lens you have chosen during that time. The following is a front view over all size comparison of the G9 compared to the A7 III.

Taking into consideration dimensions and weight, the portability score of the G9 and A7 III is 62 and 63 respectively.

Quite often, its hard to see the gap between sensor sizes just by looking at specs. The pic underneath should give you a more clear sense of the sensor sizing in the G9 and A7 III.

As you can plainly see, both of those cameras feature different resolutions and different sensor sizes. The G9 using its tinier sensor will make shooting shallow depth of field harder and the Sony A7 III will give more detail using its extra 4MP. Higher resolution can also enable you to crop shots way more aggressively.