Pentax K-01 vs Sony A7R III

Let's look a little more in depth at the Pentax K-01 vs Sony A7R III, former being a Entry-Level Mirrorless while the other is a Pro Mirrorless by manufacturers Pentax and Sony. There exists a substantial gap among the image resolutions of the K-01 (16MP) and A7R III (42MP) and the K-01 (APS-C) and A7R III (Full frame) offer different sensor sizing.

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The K-01 was brought out 6 years before the A7R III and that is a fairly big difference as far as camera technology is concerned. Both the cameras feature the same body design (SLR-style mirrorless).

Before we go straight to a complete comparison, here is a concise summation of how the K-01 scores against the A7R III with respect to portability, imaging, features and an overall grade.

This is a sample of the gallery pictures for Pentax K-01 & Sony Alpha A7R III. The entire galleries are available at Pentax K-01 Gallery & Sony A7R III Gallery.

For anybody who is intending to lug around your camera regularly, you need to factor in its weight and volume. The Pentax K-01 enjoys external measurements of 122mm x 79mm x 58mm (4.8" x 3.1" x 2.3") along with a weight of 561 grams (1.24 lbs) whilst the Sony A7R III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 657 grams (1.45 lbs).

Check out the Pentax K-01 vs Sony A7R III in our completely new Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will differ based on the lens you are working with at that time. Underneath is a front view scale comparison of the K-01 compared to the A7R III.

Taking into account dimensions and weight, the portability score of the K-01 and A7R III is 76 and 63 respectively.

Quite often, its tough to imagine the difference in sensor measurements only by viewing specs. The graphic underneath will help offer you a clearer sense of the sensor measurements in the K-01 and A7R III.

All in all, each of the cameras feature different megapixel count and different sensor measurements. The K-01 because of its smaller sensor is going to make achieving shallow DOF more challenging and the Sony A7R III will render greater detail having its extra 26MP. Greater resolution can also help you crop images way more aggressively. The older K-01 will be disadvantaged with regard to sensor technology.