Firmware Updates Add Flash Control To Sony Alpha a7R IV, a7R III and a7 III Full Frame Cameras, Sony

Firmware updates for the Sony Alpha α7R IV, α7R III and α7 III bring powerful new flash control and menu refinements to the cameras.
Firmware updates for the Sony Alpha α7R IV, α7R III and α7 III bring powerful new flash control and menu refinements to the cameras.

How to update the firmware on your Sony A7R III and A73 - Complete tutorial

Frustration over Sony Firmware Updates in their Alpha Series Cameras

Sony A7 IV review

Sony A7R III Review

Sony A7R IV Review

Sony releases α9 firmware update adding Real-Time Eye AF for animals, interval shooting functionality and compatibility with RMT-P1BT – sonyalpharumors

Sony Alpha a7 IV Full Frame Mirrorless Camera - Body Only

The Sony Alpha a7R III Mirrorless Digital Camera is a versatile, high-performance camera characterized by not only its resolution, but by its multimedia versatility. Revolving around a full-frame 42.4MP Exmor R BSI CMOS sensor and updated BIONZ X image processor, the a7R III affords an impressive 10 fps continuous shooting rate along with improved autofocus performance for faster, more reliable subject tracking along with wide frame coverage.

Sony Alpha a7R IIIA Mirrorless Digital Camera (Body Only)

Sony a7S Archives - FocusPulling (.com)

How to Set Up Your Sony Camera for Flash