Panasonic G3 vs Sony A7 III

The following is a extended analysis of the Panasonic G3 versus Sony A7 III, former is a Entry-Level Mirrorless while the latter is a Pro Mirrorless by rivals Panasonic and Sony. There exists a large gap between the resolutions of the G3 (16MP) and A7 III (24MP) and the G3 (Four Thirds) and A7 III (Full frame) posses totally different sensor dimensions.

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The G3 was manufactured 7 years prior to the A7 III which is quite a serious difference as far as technology is concerned. Each of the cameras have the same body design (SLR-style mirrorless).

Before getting into a full comparison, here is a concise introduction of how the G3 grades vs the A7 III when considering portability, imaging, features and an overall mark.

Here is a preview of the gallery photos for Panasonic Lumix DMC-G3 & Sony Alpha A7 III. The entire galleries are provided at Panasonic G3 Gallery & Sony A7 III Gallery.

For anyone who is going to travel with your camera regularly, you will need to consider its weight and dimensions. The Panasonic G3 comes with outside dimensions of 115mm x 84mm x 47mm (4.5" x 3.3" x 1.9") along with a weight of 336 grams (0.74 lbs) and the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Contrast the Panasonic G3 versus Sony A7 III in our brand new Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will vary dependant on the lens you use at the time. Below is a front view dimensions comparison of the G3 vs the A7 III.

Looking at dimensions and weight, the portability score of the G3 and A7 III is 83 and 63 respectively.

Sometimes, it is hard to visualise the difference between sensor dimensions only by reviewing specs. The picture below should offer you a more clear sense of the sensor dimensions in the G3 and A7 III.

As you can plainly see, both of those cameras provide different resolutions and different sensor dimensions. The G3 because of its tinier sensor will make getting shallower DOF more difficult and the Sony A7 III will offer you extra detail due to its extra 8 Megapixels. Higher resolution will enable you to crop photographs more aggressively. The more aged G3 is going to be disadvantaged when it comes to sensor technology.