jlstan wrote in post #18676295
Do you think shooting with a HS head would be better then using a action head when it comes to available power. I'm worried when shooting HS my throw will decrease. The specks don't really say anything about flash duration for the HS head. I understand that duration won't be much problem seeing shutter speed would then be your friend. Just having trouble deciding between the action head and HS head at this point.
The issue that Elinchrom had to resolve when making the HS head was that they had always done a great job of obtaining short flash durations. the HS head is a bit of a contradiction then, they call it HS which most accept to mean High Speed when in fact what they had to do was make a longer flash duration so that it could be used in Hyper Sync (as some would call it) as in Tail Sync, now I have never seen a capture of the HS output showing the peak and fall off but from conversations with an Elinchrom rep they made the peak less obvious and extended the duration - same power just spread
Issue with tail sync is that the tail drops off and you get less power towards the end of the exposure, whereas with true HSS (High Speed Sync, the pulsed variety) you get consistent power across the whole of the exposure
The other point that seems to get forgotten with the HS head is that shutter speed controls the flash power just like it does with HSS so at 1/4000 you have approx 1/2 the power you had at 1/2000 for both systems, where the HS head scores is that you do not get that large initial power drop when going above X-Sync