These days though taking a smart phone has enough camera power to get pretty good photos these days.
There is something special about this particular camera though is that I had it “converted” to take photos in different part of the electromagnetic spectrum that the normal human eyes can’t see.
The world is flooded with different wavelengths of energy, some good, some bad depending on its frequency. I’m no scientist but I’ve always had a fascination with things that you don’t normally see. What the human eye can detect is a very tiny part of these wavelengths of energy. As you can see from the above diagram the small rainbow section in the middle is what we can see with our human eyes.
All cameras have filter which lets visible light coming though the lens focused on it & turned into data. The thing is these sensors have to be shielded to only detect the visible spectrum with a glass filter. If you have a SLR type camera when you can take the lens off you can actually see the glass filter over the sensor. Looks slightly darker, maybe a dark green tint to it. I had this filter replaced with one that only allows the InfraRed part of the spectrum though and blocks everything else.
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| Normal filter |
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| InfraRed filter |
You can just have an Infrared filter over as a normal lens filter but a camera without being converted but needs much longer exposure times, typically 5-20 seconds. Which means you’ll need to have a tripod to keep the camera stable to get clear photos. With this conversation the shutter speeds are the same as a normal camera.
Different materials reflect infrared light differently. Typically plants, trees etc reflector infrared light which shows up as white. Anything that doesn't reflect infrared light turns out black. The raw image out of the camera still needs to be loaded onto a computer and adjusted somemore to get the best results.
So over the sunny days I’ll be going out with my Infrared camera and posting on instagram
til the next ride, be safe…
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