iPhone 3GS + Hoya R72 filter = near infrared camera

[morloff]

Just for the record, IR only picks up reflective light, it does not however pick up heat for night vision. Two totally different technologies.

[bombaykaizoku]

@morloff different image sensors but still image sensors looking at light.

[HermidaTech]

So If I'm driving at nigh with my headlights on and put this filter on my Iphone it will essentially let me see more objects that are normally too dark for my naked eye?

[bombaykaizoku]

@HermidaTech no, it filters light It will not add light.

[DEATH333METAL]

@HermidaTech if you add ir spot lights on your car it works like night vision but you have to provide the light

[thepen1]

Thanks for posting, v cool idea! I'm really curious if you have any videos of people at night with the filter you'd be willing to share? Would greatly appreciate it!

[WilliamRayWalters]

So, just to be clear, this is a 720nm IR filter? This is good to know that it works this well with the iphone.. Thanks for posting this video.

[bombaykaizoku]

@WilliamRayWalters Yes, though I should have said far red instead of IR. This will work with any cheep camera.

[WilliamRayWalters]

@bombaykaizoku I've tried it with both my cell phone and a relatively cheap Jazz flip HD camcorder, and it does work (although you need a really bright day) with my 680nm IR filter. But it's near infrared right? Not far infrared? Far infrared is thermal imaging, no?

[bombaykaizoku]

@WilliamRayWalters From what I can gather it is Near Infrared. What I've read is that thermal IR is in the 900–14,000 nanometers range. I do not think the camera image sensor has decent sensitivity in this range otherwise car engines and pots of boiling water would look bright and I have not observed this. Also heat from the camera would cause noise in the image. Though, as an aside, the man in this video is wearing all black ( youtube.com/watch?v=weik5M_AKi­s )

[WilliamRayWalters]

@bombaykaizoku Another nice video. Hey, since the low nm (~720) IR filter works with cheap cameras because of the sensor being cheaper and not having an IR blocker, have you tried it with a camcorder that has nightvision, but not 0 lux nightvision? In other words one of the 'low lux' nightvision camcorders. It should work, no? I mean, I've done my own experiments but not with one of the newer low lux models. They don't seem to manufacture true 0 lux nightvision anymore.

[bombaykaizoku]

@WilliamRayWalters I have not. Im not sure what would happen.

[LanceCampeau]

I am really impressed with the sound quality on this clip... very clear!

[TaiwanSCW]

So cool. Hey, you can also break open a computer disk (you know those square hard 3" ones) and use its film inside. I tried it and its awesome and free.

[diogomaia1981]

nothing like experimenting