It is not something that I have ever set out to measure, but I have on occasion noticed a few strobes that don't seem to be full power. Can't think of a specific light off hand - if you do a search here, you may find some examples.thanks SB. about 1hr40 then ish. would you off the top of your head know of a light that dosnt use 100% brightness on strobe ?
Note also that most strobes are indeed 50:50 pulses, but some are not (especially among the really high frequency ones). The S10 is definitely 50:50.