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Richard Chapman | all galleries >> Galleries >> High Speed Photography > Jan 30 - Splash
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Jan 30 2006 Richard Chapman

Jan 30 - Splash

Florida

Been tinkering with my microcontroller-based trigger/timer for so long, thought it was time I actually used it for some real shots!

It did make life easier than my previous attempts with an analog timer - accuracy, repeatability, plus the fact that I could use it to trigger the camera (when beam first tripped) AND flash (240 milliseconds later) made it easier.

This is a sequence of three different drops, from slightly different heights (if it's dropped from higher, it's going faster when it cuts the beam, so it reaches the surface slightly earlier relative to the flash time).

Canon EOS 5D ,Canon EF 180mm f/3.5L Macro USM
f/22, B shutter (triggered by timer, about 241 ms), flash at 1/32 power. full exif

other sizes: small medium large original auto
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Richard Chapman03-Feb-2006 11:18
It's homebrew. There's a shots of the timer circuit athttp://www.pbase.com/richardkchapman/image/52860139

Someday I may get around to posting schematics / instructions / source code. In the meantime I'll happily answer any questions anyone might have
Dennis Steinauer03-Feb-2006 06:03
I'd love to learn more about your trigger/timer. Is it homebrew or store-bought?
Josy's Pics31-Jan-2006 03:28
Nice job!
Guest 31-Jan-2006 03:17
Really cool series of shots -- such incredible detail. Nice job/