Kurt,Guppy wrote:The pressure wave from the lightning can be measured with a microphone and recorded on a channel with Audacity.
At the same time, the flash is measured with SIEMENS Silicium-PIN-Photodiode with short circuit time SFH 203
http://www.focus-stacking.ch/html/flash ... _time.html
and records this on the second channel.
Then you can see the timing in Audacity.
Kurt
Very nice image and discussion.
There is a comment in the reference that is :
Studio flashes possess a high guidenumber (e.g. 55), however, the burning time usually is about the same over all power levels (full to 1/32 power), typically the burning time is approximately 1/200s to 1/1'000 s, due to long flash bulbs. The power reduction is regulated by the light intensity and therefore studio flashes are not suitable for macro photography.
However, I disagree with this statement as there are many modern Studio Strobes that are actually faster than a Speedlight at a given power level, and without the hassle of batteries, overheating and very slow refresh times. These modern Studio Strobes use the same IGBT technology as Speedlights but at a much higher power level, 10X or more.
Best,