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Canon DSLR Challenge | all galleries >> Challenge 111: Free Study (Hosted by mlynn) >> Exhibition > The Opening
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30-MAY-2007 Jim Thode (aka William Tell)

The Opening

Canon EOS 5D
1s f/10.0 at 47.0mm iso500 hide exif
Full EXIF Info
Date/Time30-May-2007 20:44:21
MakeCanon
ModelCanon EOS 5D
Flash UsedNo
Focal Length47 mm
Exposure Time1.00 sec
Aperturef/10
ISO Equivalent500
Exposure Bias
White Balance
Metering Mode
JPEG Quality
Exposure Programprogram (1)
Focus Distance

other sizes: small medium original auto
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Guest 24-Jan-2008 11:53
hey, I think I will go down the sound activator route when I've got time to build it but thanks for the info. Didn't ealise it was an arrow but I can see it now!

The flash I'm using is an old National/Pana PE-287S. It doesn't seem to have a pre flash and when set to Auto low ISO and say F1.8, it seems to strobe pretty fast. Hope it works. Like your other shots too.
Pete
Canon DSLR Challenge24-Jan-2008 06:03
Fantastic! I do think a modern speedlight might be too slow for this. It's hard to beat the old auto-thyristor flashes for getting a very short pulse. I've examined the output pulses from my 580 EX and it never does generate any extremely short pulses. Instead, it tends to move to a PWM mode (almost as if it was in high speed synch mode) to create the lower power outputs. So to get one very short pulse, I do think we are stuck with using old flash units. This is really great. It's hard to imagine better timing :) Jim H.
Canon DSLR Challenge23-Jan-2008 23:35
Thank you for sharing the additional info Jim, amazing stuff! --mlynn
Jim Thode23-Jan-2008 22:46
pj22w
For this shot I did use a 40 year old strobe/flash. I don't believe a sound trigger would work on a shot like this. There is no loud noise. For the flash timing I used a switch that was actuated with a string that was tied on to the arrow. I could move the switch back and forth to get the timing where I wanted.
A few more at:
http://www.pbase.com/jimthode/2007favorites

Jim
Guest 23-Jan-2008 11:18
nice work. I was reading yesterday about building a sound activated flash or strobe. Any pointers would be useful. Did you use a speedlight or was it too slow? Was the trigger a DIY job? If so, built from scratch or modified speaker etc? Any help appreciated!!
Guest 23-Jan-2008 04:56
creative and super capture
PauloCGama23-Jan-2008 02:15
creative and stunning!!
Canon DSLR Challenge23-Jan-2008 01:30
Interesting, my mind is trying to work it out. --mlynn