Panasonic G2 vs Sony A7R III

Its time to look much closer at the Panasonic G2 and Sony A7R III, one being a Entry-Level Mirrorless and the other is a Pro Mirrorless by brands Panasonic and Sony. There is a sizeable difference among the image resolutions of the G2 (12MP) and A7R III (42MP) and the G2 (Four Thirds) and A7R III (Full frame) feature different sensor dimensions.

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The G2 was introduced 8 years prior to the A7R III and that is a fairly large gap as far as camera tech is concerned. The two cameras offer the identical body type (SLR-style mirrorless).

Before we go straight into a full comparison, below is a concise synopsis of how the G2 grades vs the A7R III with respect to portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Panasonic Lumix DMC-G2 and Sony Alpha A7R III. The whole galleries are viewable at Panasonic G2 Gallery and Sony A7R III Gallery.

In case you're planning to lug around your camera often, you have to consider its weight and volume. The Panasonic G2 has got external measurements of 124mm x 84mm x 74mm (4.9" x 3.3" x 2.9") and a weight of 428 grams (0.94 lbs) while the Sony A7R III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

See the Panasonic G2 and Sony A7R III in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are working with at that time. Here is the front view dimensions comparison of the G2 versus the A7R III.

Looking at size and weight, the portability score of the G2 and A7R III is 72 and 63 respectively.

In many cases, it is very difficult to imagine the gap in sensor measurements merely by seeing specifications. The photograph here might give you a far better sense of the sensor measurements in the G2 and A7R III.

To sum up, both of these cameras offer different megapixel count and different sensor measurements. The G2 with its smaller sensor is going to make getting shallow depth of field more difficult and the Sony A7R III will produce greater detail using its extra 30MP. Greater resolution can also help you crop images a little more aggressively. The older G2 will be disadvantaged in sensor tech.