To expand: the solutions that people use (including myself who recently put a cam in a welding station of a shop), are just letting less light into the camera by either aggressive iris settings or an external wideband filter (deep sunglasses) and compensate with software to be able to bounce off saturation in a small area, or buy a camera rated for this. Week 3 of a decent (c-mount) ip cam starring at 3 welding stations with no problems so far. I just locked the motorized iris at minimum during open hours and compensate with software, it's grainy, but acceptable. After closing it goes back to auto for night stalking.
Uv is just far easier (higher efficiency) for ccds to pickup than the visible light spectrum, why a nikon d100 slr with the uv filter carefully pryed off the sensor makes for some amazing pictures. Afaik The cam isn't pointed at where welding is expected to happen, I think were good without drastically lowering the signal to noise ratio with a filter. A few pixels saturating doesn't hurt it, only a whole row, and at that point, IR heat is what's going to do the damage. Can we just leave it? And mention "please be aware of the camera if your going to weld in a new place until the walls are done"? On Apr 2, 2014 12:32 AM, "Torrie Fischer" <[email protected]> wrote: > On Tuesday, April 01, 2014 17:41:09 a l wrote: > > We should get a lens filter to alleviate this issue. I don't think > they're > > terribly expensive > > UV light doesn't kill a CCD. > > It is more about the net intensity than any particular wavelength. > > Welding creates a spark gap transmitter, which emits radiation in a wide > range > of frequencies. There isn't any one distinct frequency, as it is > essentially a > form of white noise across the EM spectrum. > > Pointing the camera at the sun won't kill it. Taking every photon that hits > within the city limits of Akron and squeezing it into a densely packed and > tiny CCD will, as the absorption will produce a lot of heat. > > > Regards, > > Andrew L > > > > On Mar 29, 2014 6:52 PM, "Justin Herman" <[email protected]> wrote: > > > Just as a reminder, If you are welding, you need to not do it in front > of > > > the webcam. The CCD is not protected from the UV light the welder > > > produces. > > > The UV will damage the Webcam. > > > > > > On Sat, Mar 29, 2014 at 5:11 PM, Torrie Fischer > <[email protected]>wrote: > > >> Webcam's back! > > >> > > >> Check it out on live.synhak.org. > > >> _______________________________________________ > > >> Discuss mailing list > > >> [email protected] > > >> https://synhak.org/mailman/listinfo/discuss > > > > > > _______________________________________________ > > > Discuss mailing list > > > [email protected] > > > https://synhak.org/mailman/listinfo/discuss > > _______________________________________________ > Discuss mailing list > [email protected] > https://synhak.org/mailman/listinfo/discuss >
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