neiln
newbie
Reged: 30/09/2008
Posts: 8
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I've been away from photography for a few years, but you used to be able to buy tiny portable slave-operated flashguns about 2 inches square which you could sprinkle around a set and trigger using the on-camera flash to light an entire interior. I think they were made by Cobra, and they were only about £15 each as I recall.
Does anyone know where I can get some of these now?
I can't find them anywhere.
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dangie
Puff Pastry Connoisseur
Reged: 04/08/2006
Posts: 437
Loc: Mayrhofen Austria (I Wish..)
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Neil
Is this what you mean?
Cobra Flash
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My Brain's five feet eight inches from the ground
But my mind's still in the gutter....
Dangies Flickr
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neiln
newbie
Reged: 30/09/2008
Posts: 8
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Yes. They have changed the design since I last saw them but that's exactly what I was talking about. Thanks,
Neil
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Benchista
Wich Tyler
Reged: 11/08/2000
Posts: 37849
Loc: Everywhere and nowhere, baby
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Problem is that they don't really work with dedicated flash on digital cameras, as they rely on a pre-flash (for flash metering purposes) which triggers the slave units.
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Nick
www.nbrphoto.com
Light and Shade II - the new blog
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ShootAlot
newbie
Reged: 15/09/2008
Posts: 16
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Yes, we found this problem when we tried to do a set up one day. We didn't find a way to overcome it and had to switch equipment.
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Commercial URL removed
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Learning
Ethelred the Ill-Named
Reged: 26/09/2006
Posts: 2334
Loc: Nottingham
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If you use Nikon equipment and have a camera flash (or flash mounted on the camera hot shoe) capable of being a commander for Nikon's system then the SB-R200 slave units are perfect for the job. Its the only way they will work!
If you want to use dumb slaves like the old Jessop's 150Slave units then you need to use the camera flash in a manual mode. The SB-200 is slightly more expensive than the 150Slave. Slightly in this context meaning about 16 times as much 
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neiln
newbie
Reged: 30/09/2008
Posts: 8
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Sorry, you've lost me now. What are 'dumb slaves' exactly?
And thanks for the tips everyone. I wasn't aware of the pre-flash issue. I suppose I could just use my old non dedicated Vivitar flashgun as a trigger?
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dangie
Puff Pastry Connoisseur
Reged: 04/08/2006
Posts: 437
Loc: Mayrhofen Austria (I Wish..)
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Neil
Sorry I haven't read this post for a while.
What camera are you using?
I ask because old flashguns from the film era often used a high trigger voltage what can seriously damage modern dSLR's electronics. There is a link below to a useful website.
Flash Trigger Voltages
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My Brain's five feet eight inches from the ground
But my mind's still in the gutter....
Dangies Flickr
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