Laser Beam ...
Hi all - I'm shooting a documentary shortly with a Canon XM2 (GL2) where the subject will be pointing a laser temperature gun towards to camera.
As in "Terminator" I was considering letting the laser track across the lens ... two questions: 1) Is this safe? (I won't be looking in viewfinder!). 2) Is there any danger to the camera itself? Thanks in advance for any help! Paul. |
Paul, I did this once with a laser pointer on an XL1S. However, I did not point it directly at the lens. The effect of it hitting the *edge* of the lens cap momentarily, however, was quite enough. It flared nicely. I had smoke and dust in the air so the beam showed up nicely as well. I didn't need to blast the sensor with a light hotter than the Sun! Don't do it! Your manual probably even says don't. And don't point it at your eyes directly either.
|
Thanks Keith. Yes, I'm planning to have smoke in the air as well to highlight the beam.
I think I need to find someone with a steady hand with the laser ... ! |
can i ask why you do not just simulate this digitally? using lasers is never safe, and its better to be safe than sorry.
|
Hi Tim - yes I would consider it - any suggestions?
I'm using Sony Movie Studio as my editing package. Paul. |
i think something like aftereffects could be used here. if you want to do it so it appears directly its just a matter of having a red circle and messing with its blending mode till it gives you something you desire. lens flares can be added in alot of programs to.
|
Looking in the view finder wouldn't be an issue as the tv can't emit the same sort of light that the laser is... it's just duplicating what it can... and in this case rather poorly in comparison.
|
Quote:
|
Quote:
I agree it's not a good plan to shoot it at the ccd's either, but looking at what would be recorded/burned in to the ccd on a monitor isn't harmful. |
How about shooting a mirror image?
If it was just a laser pointer, I think it might be diffused by striking the mirror so would be safe filming it. |
Quote:
|
According to this site, http://www.naimark.net/projects/zap/howto.html, it shouldn't damage the sensor.
Still, you might consider a ND filter, a green filter would also be effective on a red laser. |
Quote:
|
All times are GMT -6. The time now is 03:00 PM. |
DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network