Canon 580/550 EX question

I've not yet located either manual, but in the meantime can anyone tell
me if, when using the 550 EX as a slave (to a 580 EX), can I manually
stop down the flash output while it's in slave mode? I've tried, but
can't seem to get there.

Or, if I put the 580 in Master (or Slave) Mode off camera, will the
on-camera flash compensation setting control that flash when it's off
camera?

Is there no online PDF manual for either flash? I cannot seem to find
same on Canon's site.

Finally, if everything is in ETTL mode, will the on camera flash comp.
setting control the output of both units?

--
John McWilliams

http://eosdoc.com/manuals/?q=580EX



"John McWilliams" <jpmcw.RemoveThis@comcast.net> wrote in message
news:NrCdnWsX_vEn15nYnZ2dnUVZ_sCdnZ2d@comcast.com...
> I've not yet located either manual, but in the meantime can anyone tell me
> if, when using the 550 EX as a slave (to a 580 EX), can I manually stop
> down the flash output while it's in slave mode? I've tried, but can't seem
> to get there.
>
> Or, if I put the 580 in Master (or Slave) Mode off camera, will the
> on-camera flash compensation setting control that flash when it's off
> camera?
>
> Is there no online PDF manual for either flash? I cannot seem to find same
> on Canon's site.
>
> Finally, if everything is in ETTL mode, will the on camera flash comp.
> setting control the output of both units?
>
> --
> John McWilliams