I have recently moved from Canon to a Sony A7R IV and want to fire my Canon flash (600EX-RT) mounted on a X1R-C while using a XPro-S on camera.
I can successfully use this combination in manual mode, but in TTL mode, while firing the flash it does not generate sufficient light to illuminate the scene. No matter what compensation factor is used the light output remains constant. The same flash unit and X1R-C used on a Canon camera with a XPro-C works correctly.
My question is, is a XPro-S compatible with a X1R-C? Obviously if they are compatible any assistance on settings to make then work together will be most gratefully received.