Here is some data from our local pool. Not quite the way the Backscatter boys did it. Put a bright white screen against the wall (about 11 feet deep). Put the strobe on a tripod parallel to the screen (PITA). Shot the strobe 20 times, averaged the shots using an image processing tool in Matlab. Also put a strip of photodiodes along the screen at the axis of the strobe light. Here is data from the photodiodes. I can post the error bars, but all shots were within 5% or so except one shot with the S2000. Note this is all from a single example of each strobe so YMMV. The intensity scale is completely arbitrary, my waterproof flash meter was in fact not so waterproof so I have only intensity measurement.
strobe.pdf 27.4KB 145 downloads