Warnings for out-of-range flash power calculations (TTL)
Using TTL:
As the V6II calculates the correct power level (after the preflash) and knows the possible power settings of the used flash (minimum 1/128 or 1/256 or whatever) then it could issue a warning after the calculations resulted in a correct power of 1/512 (for example) and likewise if the correct power would have to be 2/1 (double the max power). After the shot, a message on the screen like "1EV MORE REQUIRED" or "2EV LESS REQUIRED" would help the photographer to know what caused the under/overexposure.
As the V6II calculates the correct power level (after the preflash) and knows the possible power settings of the used flash (minimum 1/128 or 1/256 or whatever) then it could issue a warning after the calculations resulted in a correct power of 1/512 (for example) and likewise if the correct power would have to be 2/1 (double the max power). After the shot, a message on the screen like "1EV MORE REQUIRED" or "2EV LESS REQUIRED" would help the photographer to know what caused the under/overexposure.
Comments
However, technically it's not possible, because it requires a two-way communication between the receiver (RX) and the transmitter (TX). The RX receives signal from TX only, but it cannot send feedback to the TX.
It's good point for photographer. I agree. Maybe we can implement it in our next generation flash trigger.
Senior Product Specialist
Cactus®
Harvest One Limited