Step 4: Photographing in IR

You will notice that when you attempt to use the camera now, you more than likely can't see anything. That is because the film from the floppy disk blocks most visible light coming through it. If you hold it up and look through it, chances are you won't see anything. What it does allow through is IR light. The sun gives off most of the IR you will use to take pictures, but other things such as IR LEDs, lightbulbs, fires, and heating elements from stoves give off IR light as well. This being said, in order to get a proper exposure you will likely need to be outside on a sunny day, and if possible, set your exposure to +1 or +2. 

Some of the best things to shoot in IR are plants. They reflect IR very well. The color of the film will come through in your IR pictures, so shooting in black and white makes for great pictures in IR.

Above are some examples of things photographed with this IR filter on my HTC Rezound. The first is a 60w equivalent daylight CFL, and the second is outside on a cloudless day at about 2pm. You can see how much light you lose putting the filter on, so remember to shoot with as much light as you can. I didn't bother doing any post-processing with these pics, but a little touch up can definitely help.
<p>This also works really well with the BP104 photodiode (IR sensor). The sensor was being saturated by natural light, so any IR signal was unnoticeable, but with my new floppy disk light filter it works perfectly. Thanks!</p>
<p>So I see all these instructibles everywhere that talk about removing the filter from the camera lens. And others saying to place film (or a disk) over the lens to block visible light, but say nothing about removing the filter. I have had very cheap, and very expensive digital cameras and cell phones, and I don't think I've ever seen one that does not light up when a remote is pointed at it and buttons pressed. So, anyone? Whats the deal on removing the filter IN the lens?</p>
<p>Many new cameras apparently have an IR filter to help clean up the image (and supposedly prevent unwanted thermal imaging), however if you block visible light, and the camera already has an IR filter -&gt; then the resulting image will be of nothing since both spectra would be removed. If you are seeing the remote lights then you don't have to worry though...</p>
Another filter option is if you have some developed negatives. The darkest areas (say, near the ends where it may have been exposed directly to daylight during loading) are said to make usable IR-pass filters.
Yes, it works fine. In my cell phone I can't see anything except the sun, but with my camera the photos are ok.
I can't be alone in being totally confused when I first saw the title of this post. On reading I then understood that you meant a filter that allowed only IR through and blocked visible light. May I suggest renaming the 'ible to something like &quot;How to take IR photos with cell phone camera&quot; or &quot;Easy IR mod to cell phone camera&quot;..? <br> <br>regards <br> <br>G
For a lot of phones (mine works perfectly) the battery cover covers the entire back of the phone, so the &quot;filter&quot; can be put on without a case, held over the camera by the pressure of the backplate.
Yea mine does too, however there are phones like my old one (Droid 2) where the battery cover only covers the battery, so I figured I'd cover everyone.

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Bio: I've never had much, so I try to do the most with what I have. Most of the time that means breaking stuff...
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