>Russ, Max et al:
>
>Agreed: The on-camera system probably sends back one power
>level for each group. This still leaves unanswered the
>question: what if each remote group has multiple units?

Wouldn't this work itself out automatically?

Let's say there was only one remote in a group, and it fired its preflash and the camera measured for simplicity '6'. Then, let's say that whenever an energy level of 6 is measured it assigns a power level of 1/2th for that flash.

Now, let's put three remotes in the same group all aimed at the same spot. They all fire their preflashes simultaneously, so now the energy measured by the camera is '18' (3 times as much). This will cause the power calculation to come up with a power of 1/3 as much or '1/6th'. So now each of the 3 remotes will fire at 1/6th power and when all 3 remotes are added together it will total a power level of 1/2, just like with a single remote.

Russ
Nikonian Team Member
Russell MacDonald Photography
Nikon CLS Practical Guide