Pentax K-3 II vs Sony A7R IV

Below is a extensive analysis of the Pentax K-3 II and Sony A7R IV, one being a Advanced DSLR and the latter is a Pro Mirrorless by competitors Pentax and Sony. There exists a huge gap between the resolutions of the K-3 II (24MP) and A7R IV (61MP) and the K-3 II (APS-C) and A7R IV (Full frame) enjoy different sensor sizing.

President Biden pushes bill mandating TikTok sale or ban

The K-3 II was manufactured 5 years earlier than the A7R IV and that is quite a significant gap as far as technology is concerned. Both of these cameras offer different body type with the Pentax K-3 II being a Mid-size SLR camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before delving in to a in depth comparison, below is a short highlight of how the K-3 II grades versus the A7R IV in relation to portability, imaging, features and an overall grade.

This is a preview of the gallery images for Pentax K-3 II and Sony Alpha A7R IV. The entire galleries are available at Pentax K-3 II Gallery and Sony A7R IV Gallery.

For those who are intending to lug around your camera, you'll need to think about its weight and volume. The Pentax K-3 II has got outer dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") and a weight of 800 grams (1.76 lbs) and the Sony A7R IV has sizing of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") along with a weight of 665 grams (1.47 lbs).

See the Pentax K-3 II and Sony A7R IV in the latest Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are utilising at that time. Following is the front view sizing comparison of the K-3 II against the A7R IV.

Using dimensions and weight, the portability grade of the K-3 II and A7R IV is 59 and 62 respectively.

More often than not, it can be hard to visualize the difference between sensor measurements simply by looking at a spec sheet. The graphic here will help give you a stronger sense of the sensor sizes in the K-3 II and A7R IV.

Clearly, each of these cameras enjoy different megapixels and different sensor measurements. The K-3 II due to its tinier sensor is going to make achieving bokeh harder and the Sony A7R IV will give more detail due to its extra 37MP. Higher resolution can also help you crop photographs far more aggressively. The older K-3 II is going to be behind when it comes to sensor tech.