Be warned! Lasers can be very bad for your sensor's health!!
Posted 06/09/2011 - 14:05
Link
Also here: http://www.laserist.org/camera-sensor-damage.htm
But what did it do to people's eyes at those concerts??
Seems to be the original thread here - appears those shows were using incorrectly set high power settings which would have damaged retinas too
Matt
But what did it do to people's eyes at those concerts??
Seems to be the original thread here - appears those shows were using incorrectly set high power settings which would have damaged retinas too
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
(For gallery, tips and links)
Posted 06/09/2011 - 14:07
Link
Maybe it' a design flaw in Canon 5D Mk II?
Yves (another one of those crazy Canucks)
Posted 06/09/2011 - 14:16
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Not just 5D Mk II:
Matt
Quote:
I work in a laser lab at Johns Hopkins University, and I can say that Frank doesn’t know what he’s talking about. It’s not a specific brand or sensor problem, it’s a simple energy density/flux issue. The materials used in every CCD or CMOS sensor are essentially the same, Silicon. Large lenses focus a significant amount of light onto a fairly small sensor, making a laser that might be safe normally, dangerous once it is focused. None of Frank’s pictures actually show the laser pointing at the camera, and since a laser is a coherent, contained light source, you can only get damage when a laser is pointing at you, or reflected so that is pointing at you.
Simply put, if you’re at a party or show where lasers are shining onto the crowd, you should leave. Only if the power is very low will this ever be safe, but I’m guessing the roadie or DJ operating these lasers doesn’t comprehend the dangers involved, so you can never be sure. If it can damage a sensor, it can probably damage your eye. The people that had their camera’s destroyed in these videos could/should sue to get their camera replaced, and then some.
(from the original thread link above)I work in a laser lab at Johns Hopkins University, and I can say that Frank doesn’t know what he’s talking about. It’s not a specific brand or sensor problem, it’s a simple energy density/flux issue. The materials used in every CCD or CMOS sensor are essentially the same, Silicon. Large lenses focus a significant amount of light onto a fairly small sensor, making a laser that might be safe normally, dangerous once it is focused. None of Frank’s pictures actually show the laser pointing at the camera, and since a laser is a coherent, contained light source, you can only get damage when a laser is pointing at you, or reflected so that is pointing at you.
Simply put, if you’re at a party or show where lasers are shining onto the crowd, you should leave. Only if the power is very low will this ever be safe, but I’m guessing the roadie or DJ operating these lasers doesn’t comprehend the dangers involved, so you can never be sure. If it can damage a sensor, it can probably damage your eye. The people that had their camera’s destroyed in these videos could/should sue to get their camera replaced, and then some.
Matt
http://www.mattmatic.co.uk
(For gallery, tips and links)
(For gallery, tips and links)
Posted 06/09/2011 - 14:38
Link
Quote:
but I’m guessing the roadie or DJ operating these lasers doesn’t comprehend the dangers involved
That's no excuse in my book.but I’m guessing the roadie or DJ operating these lasers doesn’t comprehend the dangers involved
There has been enough publicity over the last decade and more regarding all types of laser products that anyone professing ignorance (before or after the fact) should be treated accordingly
Bernard
Posted 07/09/2011 - 02:13
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I'm with Bernard on that. Especially for people in an industry where laser usage is widespread.
Posted 07/09/2011 - 11:09
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Certainly for major concerts and festivals all lighting, including lasers is done by qualified lighting technicians - who have been trained in the use of all lights, including lasers. It is not something which any odd bod can do. Yes they may have grunts who hang the things up for them but the control of the lighting is done by qualified, highly trained individuals and their computers, just as the sound, electrics, screens, camera work etc is. They know lives are at risk and take these things seriously.
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2469 posts
17 years
South London
Some of you shoot concerts. Just be careful out there!!