Len wrote:
> If one of the flash units had an ND filter
> on it, the TTL system would still quench both
> flashes when enough light has reached the film
> but the flash with no ND filter would contribute
> more light than the flash with an ND filter,
> giving you one brighter source of light on one
> side of the picture and a dimmer source of light
> acting as fill, to reduce contrast from the
> other side.
>
> Feel free to correct the error of my thinking
> but I believe that this is how it happens with
> my PZ-1p when I use the RTF and the AF500FTZ
> together.

Len,

I also think it's possible that the RTF and AF500FTZ have very different light 
capacities...like spraying the subject with a garden hose and a fire hose at the same 
time.  You could run each hose for 3 seconds, but you would be a lot more wet on the 
side with the fire hose!

Regards,  Bob S.
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