Canon R100 vs Sony A7R III

Lets look much closer at the Canon R100 and Sony A7R III, former being a Entry-Level Mirrorless while the latter is a Pro Mirrorless by competitors Canon and Sony. There exists a sizable gap among the resolutions of the R100 (24MP) and A7R III (42MP) and the R100 (APS-C) and A7R III (Full frame) offer different sensor sizing.

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The R100 was unveiled 5 years later than the A7R III and that is a fairly significant difference as far as camera technology is concerned. Both cameras feature the same body design (SLR-style mirrorless).

Before going right into a detailed comparison, here is a brief synopsis of how the R100 grades versus the A7R III with respect to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Canon EOS R100 & Sony Alpha A7R III. The full galleries are available at Canon R100 Gallery & Sony A7R III Gallery.

If you are looking to lug around your camera, you will want to take into account its weight and volume. The Canon R100 has got outside measurements of 116mm x 86mm x 69mm (4.6" x 3.4" x 2.7") along with a weight of 356 grams (0.78 lbs) whilst 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).

Check the Canon R100 and Sony A7R III in our completely new Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will vary based on the lens you are employing at that time. Below is a front view proportions comparison of the R100 compared to the A7R III.

Considering dimensions and weight, the portability rating of the R100 and A7R III is 76 and 63 respectively.

Typically, it's tough to visualize the gap in sensor measurements just by viewing specs. The graphic here may offer you a more clear sense of the sensor measurements in the R100 and A7R III.

As you can plainly see, the 2 cameras feature different resolutions and different sensor measurements. The R100 with its smaller sensor is going to make getting shallow DOF trickier and the Sony A7R III will render extra detail having an extra 18 Megapixels. Higher resolution will make it easier to crop shots way more aggressively. The younger R100 provides an advantage with regard to sensor technology.