Laserbox 3.1 at 120mA

My laserbox 3.1 burning my desk!

http://www.youtube.com/watch?v=4pSa_dSVE8I

These things do burn quite well. At the focal point the dot turns yellow which is the point of incandescence!

that is a very good video. Any time I try recording a video of burning with my lasers the sensor becomes oversaturated with light and I get nothing but a big bloom. Maybe you can share with us how you do this without it oversaturating the sensor.

Kenom said:

that is a very good video. Any time I try recording a video of burning with my lasers the sensor becomes oversaturated with light and I get nothing but a big bloom. Maybe you can share with us how you do this without it oversaturating the sensor.

Click to expand...

I'm going to guess that his camera does not pick up the color very well, I could be wrong but the camera would probably bloom if he tried to take a video like this with a red burner.

Here's another adding features to Ben's face! ;D

http://www.youtube.com/watch?v=Ph2bhbaI6A0

I have not tried any high power red. I'll post more videos of my RPL300 (at 410hehe) burning stuff.

It really depends on the camera and lens you use as well as its sensor. Cheaper digicams and camcorders will have a hard time with such a point source light.

LMAO! That $100 bill one was great. Nice burner, btw

Kenom said:

that is a very good video.  Any time I try recording a video of burning with my lasers the sensor becomes oversaturated with light and I get nothing but a big bloom.  Maybe you can share with us how you do this without it oversaturating the sensor.

Click to expand...

When we want our beams to appear bright with a lot of contrast, we use as little light as possible - what you want is just the opposite. In the vid you see that there's a fair amount of ambient light. That serves to make the laser less powerful by comparison (the camera automatically adjusts the exposure per frame to be fast enough that the environment appears properly lit - the more ambient light, the shorter the exposure and the less visible the laser will be).

Of course if you have a camera with manual adjustments its simply a matter of reducing gain, decreasing exposure, increasing iris, or using an ND filter. If you want the environment to still look natural though, or you don't have manual control, just use some powerful/close lighting to help everything balance out.

I use a fixed shutter speed and focus. Everything is manually adjustable on our cameras. All videos are shot with1920x1080 100mbps streams but have to be highly compressed (H.264 at 4Mbps) for youtube. A UV filter is present but is not killing too much of 400nm radiation. Circular polarization will really kill highly polarized laser light if you adjust it as so but I have not used a CP filter on these videos.