Panasonic G3 vs Sony A7S III

Following is a extended analysis of the Panasonic G3 vs Sony A7S III, one is a Entry-Level Mirrorless and the other is a Pro Mirrorless by brands Panasonic and Sony. There exists a big gap between the resolutions of the G3 (16MP) and A7S III (12MP) and the G3 (Four Thirds) and A7S III (Full frame) feature totally different sensor sizing.

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The G3 was brought out 10 years prior to the A7S III which is quite a big gap as far as technology is concerned. Both the cameras come with the identical body type (SLR-style mirrorless).

Before diving straight into a step-by-step comparison, below is a quick view of how the G3 matches up vs the A7S III when it comes to portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Panasonic Lumix DMC-G3 and Sony Alpha A7S III. The entire galleries are provided at Panasonic G3 Gallery and Sony A7S III Gallery.

For those who are going to carry around your camera regularly, you have to take into account its weight and size. The Panasonic G3 provides exterior dimensions of 115mm x 84mm x 47mm (4.5" x 3.3" x 1.9") with a weight of 336 grams (0.74 lbs) while the Sony A7S III has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") accompanied by a weight of 699 grams (1.54 lbs).

Look at the Panasonic G3 vs Sony A7S III in the new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will change depending on the lens you use at the time. Underneath is the front view scale comparison of the G3 vs the A7S III.

Taking into consideration dimensions and weight, the portability rating of the G3 and A7S III is 83 and 61 respectively.

More often than not, it is difficult to envision the gap between sensor sizes purely by reading through specifications. The image underneath may give you a clearer sense of the sensor sizes in the G3 and A7S III.

To sum up, the 2 cameras have got different megapixel count and different sensor sizes. The G3 because of its tinier sensor will make getting shallower DOF trickier and the Panasonic G3 will give you extra detail having its extra 4 Megapixels. Greater resolution can also make it easier to crop images much more aggressively. The more aged G3 is going to be disadvantaged when it comes to sensor tech.