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 Post subject: High speed flash
PostPosted: Tue Mar 03, 2009 3:00 pm 
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A single "Ultra" unit illuminating a potato shot by an airgun. Pellet can be seen exiting at the left.

Image

Greg

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http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Tue Mar 03, 2009 3:32 pm 
cool pic.

So how is this done I have always wondered. yes i am still a newb to this.


Do you set your shot up and just time it right or do you shoot continuously and sort through the shots afterwards?


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 Post subject:
PostPosted: Tue Mar 03, 2009 3:41 pm 
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I built a sound trigger and you move the microphone away from the sound souce to get the required delay (1ms per foot). Fire off a few shots without the potato and get the pellet caught in the FOV and you're ready to go :)

Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Tue Mar 03, 2009 4:05 pm 
interesting

bit too technical for me at the moment lol

but neat suff!


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 Post subject:
PostPosted: Tue Mar 03, 2009 4:21 pm 
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If I can do it - there's not much technically demanding, believe me :D
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Tue Mar 03, 2009 5:20 pm 
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Sounds like you're having far too much fun with these flashes :)

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3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
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 Post subject:
PostPosted: Tue Mar 03, 2009 5:26 pm 
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The fun is only just starting :D
The missus has just come back from a shopping trip for me with balloons, darts, coloured transparent plastic, and shallow black tins - going to be like a Blue Peter studio around here :shock:
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Tue Mar 03, 2009 5:33 pm 
I cant wait to see the photos

Maybe after my rocket boat project (thats a different discussion) I might sit down and try to build one of these contrpations lol


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 Post subject:
PostPosted: Tue Mar 03, 2009 5:34 pm 
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Adopt me! :D

Seriously, looking forward to seeing what you can do once you find more interesting subjects.

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Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
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 Post subject:
PostPosted: Tue Mar 03, 2009 7:05 pm 
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There's not a lot more interesting than an exploding potato :shock:
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Tue Mar 03, 2009 7:20 pm 
That's really cool!


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 Post subject:
PostPosted: Tue Mar 03, 2009 8:16 pm 
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First time I came across this was items like eggs and light bulbs. A potato wasn't one I thought about...

I can think of many things I'd like to see exploded, but some might cause too much attention with the authorities. :D

This is inspiring me to have a think about doing same with a normal flash and seeing how far that gets. It's been too long since I held a soldering iron...

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Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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 Post subject:
PostPosted: Wed Mar 04, 2009 8:32 pm 
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Great work Greg! I remember as a kid being fascinated by photos of bullets going through things like playing cards - the technicalities behind it always drew me in... the closest I ever got was throwing darts at balloons full of water, but it was still quite a nice shot if the timing was right!

You challenge should you shoose to accept it, is the playing card shot! And I'm talking about going through the thin part, not through the flat face!


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 Post subject:
PostPosted: Wed Mar 04, 2009 10:29 pm 
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Like this?

Image

Image

Except better of course. I need to get the pellet half way through the card, but the shot to shot variation is going to make this very difficult.

Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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 Post subject:
PostPosted: Fri Mar 06, 2009 6:29 pm 
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love this stuff but too thick to do it...
discovery channel have this show called Time Warp where they do this kind of stuff but with super-slowed-down video (that's as technical as i get.. :) )
i saw while in south korea but haven't seen it on the UK schedules back here. it was a great show..may be able to see it on youtube...
rob

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