SUMMARY
While the Sony a7R VI shares high-resolution and 30fps shooting capabilities with the a1 II, real-world performance reveals significant differences. The a7R VI's sensor lacks the DRAM buffer found in the a1 II and its readout speed is slower, leading to viewfinder lag and less immediate autofocus. Although capable of 60 AF/AE calculations per second, it cannot match the a1 II's 120fps, impacting its suitability for fast-paced sports. The a7R VI's slower rolling shutter also causes image warping with rapid lateral motion, and it lacks professional features like an Ethernet port and dedicated physical controls found on the a1 II.
TAKEAWAYS
Sony a7R VI's sensor lacks DRAM buffer, unlike the a1 II, impacting speed.
Autofocus and viewfinder refresh rates are slower on the a7R VI compared to the a1 II.
The a7R VI's rolling shutter is significantly slower, causing image distortion in action shots.
The camera is better suited for events and wildlife than professional sports photography.