here`s a really cool experiment anyone can do that not only gives very interesting results (some of which I`ll present here) and it won`t break the bank either, normally I wouldn`t post such things here on a Cooking forum, but this is so simple and so much fun that I wanted to share it with you all.
I`ll only present some of the effects and results here as the potential hasn`t been fully explored yet by myself leaving Plenty of scope for others to join in.
you`ll need a cheap webcam, you can pick them up for pocket change nowadays.
the Best sort are the ones that you have to focus manually by turning the lens holder.
you`ll have to take this apart so that you can unscrew it entirely to see the CCD chip itself, although the CDD isn`t the bit you`r after, the bit you need to remove is 99.99% of the time in the Lens housing itself.
it`s the Infrared filter!
it`s often a small flat square piece of glass that has a Green color to it, I say Often as it can be circular too, but it always flat and has a green color.
depending on the design you`ll have to either remove tiny spots of glue at the edges to remove it, or cut some plastic away and let it drop out, eitherway a sharp box cutter blade is the ideal tool.
when you`v removed this IR filter, screw the lens housing back into place.
if you connect the Cam to the PC and switch it on during this, you can can also sharpen the focus as you`r doing it, you`ll know you`v got it right when your keyboard letters are all nice and sharp looking from about half a meter away.
you`ll not notice any strange effects at 1`st, until you shove the cam up the window to look at some trees or plants, here:
still not all That bizzare but don`t the trees have a strange Whiteish color and not at all Green anymore, this is just the beginning!
here`s what it looks like with different colored plastic filters in front of the lens, I`ll start with Blue:
Now you can see the Plants have taken on a Very odd White color compared to everything else ;)
my story didn`t end there though, I wondered What would happen if I used all 3 of these filters together Red/Green and Blue?
well I made up the layers and couldn`t see a thing through it with my eyes, but tested it anyway...
Yes! a Black and White filter for color cameras!
Now the Plants look really strange
is probably the Freakiest thing about this experiment:
all the Veins in my hand are perfectly visible now, and yet in "normal" vision you can`t see them.
I hope you all have fun with this and present Your results here as well as Ideas of things to try IR vision with.
and Yes you can read a book in total darkness using a TV remote as a flashlight ;)
(Non of these pictures have been altered in Any way using any s/ware at all, they are ALL direct from the cam)