Pentax K-01 vs Sony A7S III

Let's look a bit more in depth at the Pentax K-01 vs Sony A7S III, former being a Entry-Level Mirrorless while the latter is a Pro Mirrorless by competitors Pentax and Sony. There is a noticeable difference among the image resolutions of the K-01 (16MP) and A7S III (12MP) and the K-01 (APS-C) and A7S III (Full frame) use totally different sensor sizes.

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The K-01 was brought out 9 years prior to the A7S III and that is a fairly sizable difference as far as camera tech is concerned. Both the cameras offer the identical body type (SLR-style mirrorless).

Before getting through a in depth comparison, below is a simple synopsis of how the K-01 matches up against the A7S III in relation to portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Pentax K-01 & Sony Alpha A7S III. The entire galleries are provided at Pentax K-01 Gallery & Sony A7S III Gallery.

When you are intending to carry your camera often, you will want to take into account its weight and proportions. The Pentax K-01 features outside dimensions of 122mm x 79mm x 58mm (4.8" x 3.1" x 2.3") with a weight of 561 grams (1.24 lbs) whilst the Sony A7S III has measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Take a look at the Pentax K-01 vs Sony A7S III in our completely new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will differ based on the lens you are utilising during that time. Here is the front view measurements comparison of the K-01 against the A7S III.

Looking at size and weight, the portability rating of the K-01 and A7S III is 76 and 61 respectively.

Oftentimes, it is difficult to visualise the contrast in sensor sizing only by going through specifications. The graphic below may offer you a better sense of the sensor sizes in the K-01 and A7S III.

Plainly, both of these cameras offer different megapixel count and different sensor sizing. The K-01 because of its smaller sensor will make shooting shallower DOF tougher and the Pentax K-01 will show greater detail having its extra 4MP. Higher resolution will make it easier to crop pictures a little more aggressively. The older K-01 will be behind in sensor tech.