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"S" shows us how to take infrared pictures with a normal digital camera. If you have any other related tips, please leave us a comment. Video after the jump.

This entry was posted on 01/25/2007 01:00am and is filed under Science, Video .
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There are 23 comments about this post (1 pages).

1
hm, doesn't exactly look like infrared to me...
2
lol "Dont use this filter to see though people cloths"
3
a pity you can do most of that work in graphic editors.
4
how exactly does this work? like with the film strip and other stuff. is this the same thing as inverting a picture in photoshop, or is it something else?
5
Very cool!
6
X-rays have a wavelength of 0.01nm - 10nm, infrared is between 750nm and 1 mm. So even if the camera detects infrared light, you couldn't see through people's cloth.
7
omg it like watching preditor 2 . thats amazing.dissengage sarcasm mode. but if u add infrared leds to the camera u can make a nightscope with a distance of about 7 feet
8
Ok, seriously how dumb do they think we are? Infrared is nowhere near X-ray light. Infrared beyond the red side of visible light, while x-ray is beyond the blue/violet side. People are going to do this and think that they'll be able to do some thermal imaging. No you cant. The only effect you'll get is night-vision ala paris hilton. And that's only if you have an infrared light source.
9
This works because of the oddities of digital cameras. What's going on here is that digital camera light receptors are not only sensitive to infared light, but also to normal(visual) light. Thus, manufacturers have to include a infared light fliter on their cameras or else every photo you took with one would look very washed out (the visual + infared light can easily double the total light recieved). What's done in this video is the infared filter is removed from the camera, and the film acts as a visual light fliter. In other words, it filters out everything you would normally see, and only lets through the infared spectrum. Thus, your camera will now only recieve infared light when before it could only recieve visual light. You're not actually changing the camera at all, you're just changing what can get to the lens. Tips: If you want to try this out on a small scale before you tinker with a real digital camera, try it with a cheap webcam, it should work the same way. (I did it as an experiment, not as a photo guy so I didn't need to resolution.) A cheap 10-15 dollar webcam should work fine. Some models have the infared filter painted on the lens of the camera, if this is the case then you'll be out of luck, but supposedly this is pretty rare. If you don't believe that digital cameras recieve infared light as well as visual light, open up a cell-phone camera or a webcam and shoot your TV remote into the lens. You should see the infared LEDs that communicate with the television light up as if they were regular LEDs.
10
I'm sorry-- why is the word "x-ray" in this article at all?
11
There are some cool things you can do with infared photography: Incandecent lights are a good infared light source for this range. Florecent lights are not. If you use an infared camera under florecent lights the picture will be black. Photographing the sky appears as if the image is inverted. Plants with chlorophyll will appear to be white. (They reflect infared light.) People don't photograph well because blood absorbs infared light in this range while the rest of you reflects it. People will look very pale and their blood vessels will appear to pop out of thier skin. Taking a picture of your arm will let you see all the big veins running up and down your arm. This is not a thermal camera! The infared spectrum is comparitively large and less well-defined. While thermal cameras also operate in the infared spectrum, they operate on different principles and in a different part of the spectrum. Some things like butane lighters and candles will show up under a camera like this, but a hot blue flame will not. (Try it if you have some kind of hot torch around. I used a butane culinary torch.) This is because these cameras will not recieve infared light from that part of the spectrum. However, if the object is right, it will emit infared light in this range when it is very hot. I took my torch and heated up an aluminum drink can. You couldn't see the flame, but you could see a ring of heat around where it hit. This is half of a nightvision goggle type system! If you have an infared webcam or video camera, the next step is to make an infared light source. A common approach is to put together a bunch of infared LEDs. If you want some fun, try turning out all the lights. Get ready to take a picture, but before you do point a television remote at your subject (less than a foot away) and then snap the picture. It will look an awful lot like a little flashlight. BE CAREFUL! High-powered infared lamps are illegal in many (maybe all) areas because they are used for communication by emergency vehicles. Check your local rules and regulations before making anything bigger than a TV remote.
12
I forgot to mention, you can't see through people's clothes with this. You might have been able to if people were excellent emmiters of infared light, but they aren't. What does happen though, is that some T-shirts will absorb infared light, and look darker than they ought to (this is because of how they dye T shirts) If you snap a photo of a nice shirt where the fabric was dyed as fabric instead of made into a shirt and plunged into a vat of dye this should not happen. When I take a picture of my plaid shirt I'm wearing, it looks blank white.
13
Xrays and infrared are not in any way shape or form the same. Puhlease
14
Ok...so I made the filter and was testing out in the halls at work and SNAP! took the picture and Ahhhh! the only one in the building I didn't want to see naked walked right into the shot. My eyes are buuuurrrrning.
15
Sharp editors here at TechEBlog... 1. X-ray and Infrared are at opposite ends of the spectrum. 2. X-ray images require an artificial source of x-rays, which are then fired through tissue and detected by film on the opposite side. "X-ray vision" is a term which has never made any sense. Even if the camera COULD detect x-rays, there would be nothing around to detect.
16
kickass!
17
Thats pretty cool, I'll try doing that.
18
Infrared, sure. Xray? No. Not even close
19
The deal with "seeing through people's clothes" is *not* fake- it's just very specific to certain types of clothes. Most clothing is too thick to let this happen, but some specific types of clothing (many bathing suits) are fairly thing and aren't very good at blocking infrared light. So, when people do this kind of stuff at a beach, well... yeah.
20
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21
gmana cara bikin na?
22
Olympus Camera Accessroies it was going to have some substanital manual control and a camera in the form of color for each recorded image at any cropping you do with the camera
23
Wireless Camera If you have a lot of free time for this, you re a rare person diigtal cameras . The Sony Handy cam DCR HC 42, for example, is a Mini DV digtial cameras digital camcorder with still recording as well
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