Take a look at the HIGH ISO Test between, Pentax K-1 vs Sony A7R II -= The Sony A7R II features 42MP Full-Frame Exmor R BSI CMOS Sensor and Pentax K-1 features 36.4MP Full-Frame CMOS Sensor.
As we know that the Pentax K-1 also uses Sony Sensor, the 36.4MP Full Frame Exmor CMOS Sensor inside the Pentax K-1 camera is of Sony A7R camera and on the other side we have Sony A7R II camera that uses newly developed 42MP Full-Frame Exmor R BSI CMOS Sensor, let’s find-out which one is best.
Pentax K-1 vs Sony A7R II
The from above images samples we can clearly see that both the camera produces excellent image quality, at ISO 3200. We are not able to stop any major difference between them.
At ISO 12800 the Pentax K-1 showing more color noise compared to the Sony A7R II camera. However both the camera still showing excellent performance.
At ISO 102400 both camera images are almost un-usable but Sony A7R II is restoring more colors than Pentax K-1.