cinematography Glow in the dark camera lens (D.I.Y)

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filmmakingrunner

I found this a few years ago, good if your gonna make a horror film, a mystery, or anything involving a night scene.

Sorry it's not in the D.I.Y, I'm not a "Premiere" member.

It's pretty explanatory gives and shows you step by step | http://bit.ly/9hp7ZA


Respond if you got issues with this or if you have done this at all.
 
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I used to listen to it while delivering late-night pizzas. Wild stuff.

filmmakingrunner, I hate to be the party-pooper, but I'm pretty sure that's neither infrared, nor glow in the dark. And you sure as heck won't be able to shoot at night. You can shoot trippy-lookin stuff, and I guess that's cool, if that's the look you're going for.
 
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It is in fact IR light being passed through and thrust into the visual color spectrum by the camera. I'm currently doing research into using this type of technology in the field as part of the decision pipeline for IDing soil samples in place (as well as UV and prismatic diffraction). I currently have unexposed (exposed? -- mostly opaque either way) and developed slips of film in my Backpack for making these same filters in the old fashioned way we used to make solar eclipse glasses.
 
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knightly, as a fellow student of science, I know you'll understand my skeptic nature. Until I see some solid evidence, I'm just not buying it. The pictures shown in the video were all taken in the daytime, and I see no evidence that they are exposing any thermal energy, which is what an infrared camera is supposed to do:

http://en.wikipedia.org/wiki/Thermographic_camera

Thanks to this thread (and my insatiable curiosity), I've spent the last half hour googling these DIY "infrared" cameras, and that of course makes me a complete expert. ;)

Seriously, though, every single DIY "infrared" camera I saw either showed trippy-looking pictures taken during the daytime, or (the one or two impressive ones) showed pictures taken in the dark, using a DIY "infrared flashlight".

Uhhhhhh, here's the problem -- infrared radiation requires no illumination, of any sort. That's the whole point. You're supposed to be able to see the wavelength that is emitted by thermal energy, in complete dark, without any special "flashlights".

Whoever created this DIY project is onto something , but it ain't infrared.
 
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Cracker -- I think you're confusing thermal imaging with infrared. Infrared is in fact a light wave, just a non-visible to the human eye light wave. Thermal imaging is different technology.
 
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It's specifically Infrared (color IR looks like this and the graphs that came with the pack of filters I picked up when we were at Cinescope show that those specific filters do cut the other frequencies out, but let all of the IR through. The IR gets mapped into the visible light space by the camera as they are sensitive to IR lights... it's generally just overwhelmed by the visible light spectrum. If you remove the VisLight from the game, then all that is left is the IR and the UV.

Infrared is a reflected light (outdoors produced by the sun) and is present at all times (and we can see it, it's just completely overwhelmed by the visible spectrum so our eyes/minds don't register it). I'll be writing a paper eventually using this and other techniques after testing their applicability in the field and presenting at an academic conference, so I've not only looked into it, I've researched it extensively - physics and all.

Infrared absolutely requires illumination. Thermal imaging requires heat (which is a different type of radiation than light). Here's my first test from my camera, the rest are at school in my professor's camera and I'll be poking at those later this semester, along with test these techniques much more thoroughly:
IR-Test.jpg

The red channel should be even more indicative of the infrared (obviously) and clipping off all but the higher values in that channel should show specifically the IR portion of the spectrum... filtration would also knock out more of the visible spectrum leaving just the IR and UV, then looking at only the red channel would be just the IR and the blue would show just the UV.

IR Pass filters ($50-$200) will do a much better job and have results like these:
http://www.flickr.com/photos/belowred/3870199680/
http://dansdata.blogsome.com/2006/12/06/white-trees-black-sky/
http://www.flickr.com/photos/melle/2673094923/
http://photo.net/digital-camera-forum/00GEsF (toward the bottom)
 
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CF is half right\wrong

wavelength-light1.jpg


FLIR (Forward Looking Infra Red) thermal imaging systems detect IR.. But its a range that is NOT typically detected by consumer video camera sensors.

instead of the 450–750 nanometer range of the visible light camera, infrared cameras operate in wavelengths as long as 14,000 nm (14 µm).

Video cameras that DO detect IR are able to sense only the IR that is very near the visual spectrum, its really just a side effect, all the early digital cameras did this without folks noticing, I have some 1st gen web cams that work GREAT at seeing remote control IR leds, in fact me and a few coworkers wrote up a patent application for our employer on how to use a TV remote to control a PC with nothing but a web cam .. .. ..anyway a camera designed for IR imaging would have a much GREATER ability to detect a much greater range of the IR spectrum..
 
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