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Yes, almost all cameras above the dollar range will include filtering for this frequency. You can find out by pointing a TV remote at your phone camera and seei
by 13 12y ago
Yes, almost all cameras above the dollar range will include filtering for this frequency. You can find out by pointing a TV remote at your phone camera and seeing what the impact is. My iPhone can't see the IR emission at all with it's rear camera, the front camera doesn't have a filter and gets absolutely blasted. It would be devastatingly effective against monochrome CCD cameras, where the same LEDs as used in the article are used for invisible illumination of a scene.
https://i.imgur.com/zkI5p0B.jpg https://i.imgur.com/zkI5p0B.jpg
https://i.imgur.com/BfRWTbq.jpg https://i.imgur.com/BfRWTbq.jpg
If I remember correctly, a cut piece of floppy disk does a reasonable job of being a blocking filter for nearly everything that's not near IR, though that's less of a handy thing to know these days.
- rplnt 12y ago> Yes, almost all cameras above the dollar range will include filtering for this frequency. Unless they are security cameras and use IR lights to illuminate scene when it's dark.
- drzaiusapelord 12y agoThe IR nut is tough to crack if your camera does night vision. Those cameras with a ring of LEDs around them? They're IR transmitters. The camera is designed to detect IR, so it can't filter it. This is a popular method of seeing in the dark and is used on systems way more expensive than dollar store close-outs.
- seszett 12y agoWould it be that difficult though to have a modified Bayer filter with an RGBI array instead of RGBG? You would have to use different dyes for all pixels, since the currently used ones let IR light pass, but it doesn't sound that difficult to do (since we already have both IR-pass and IR-block filters).