Panasonic S1R vs Sony A7R III

In this write-up, we are analyzing the Panasonic S1R versus Sony A7R III, both Pro Mirrorless digital cameras by rivals Panasonic and Sony. The sensor resolution of the S1R (47MP) and the A7R III (42MP) is fairly well matched and they feature the same exact sensor sizes (Full frame).

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The S1R was launched 16 months after the A7R III making the cameras a generation away from each other. Both of these cameras offer the identical body type (SLR-style mirrorless).

Before going through a comprehensive comparison, below is a quick overview of how the S1R grades against the A7R III with regards to portability, imaging, features and an overall score.

Below is a sample of the gallery pictures for Panasonic Lumix DC-S1R and Sony Alpha A7R III. The complete galleries are available at Panasonic S1R Gallery and Sony A7R III Gallery.

For anyone who is going to carry around your camera regularly, you should consider its weight and volume. The Panasonic S1R features external measurements of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") with a weight of 1020 grams (2.25 lbs) and the Sony A7R III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 657 grams (1.45 lbs).

Look at the Panasonic S1R versus Sony A7R III in the new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you have chosen at that time. Here is the front view dimensions comparison of the S1R against the A7R III.

Factoring in size and weight, the portability score of the S1R and A7R III is 54 and 63 respectively.

In many cases, it is difficult to visualize the gap between sensor sizes only by looking at technical specs. The image underneath may give you a more clear sense of the sensor sizing in the S1R and A7R III.

As you have seen, each of the cameras offer the same exact sensor sizing but different megapixels. You should anticipate the Panasonic S1R to give you more detail utilizing its extra 5MP. Greater resolution will enable you to crop photos a little more aggressively. The more modern S1R should have an edge with regard to sensor innovation.