A couple of us are posting some very dramatic IR pictures. My understanding is that colder stuff comes out light, warmer stuff comes out dark. I'm wondering how to take this kind of picture. Do you need a special camera?
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Infra red
Thanks for the info!
There is, of course, the pre-digital route used to produce infrared photos: infrared film, which was available in standard 35mm format for use with any SLR.
Though I haven't checked, I'm sure Kodak still makes IR film.
IR
Briefly (I hope to be able to post more later), all digital cameras are capable to varying degrees of producing IR images, depending on the inherent sensitivity of the sensor. What is required is a filter to block out the visible parts of the spectrum, which otherwise overpowers the IR portion. The R72 is one such filter, and for most cameras its use will force a long exposure (a second or more), and produce a predominantly red-toned image. Some cameras such as my (old, now) Sony F717 are such that good handheld IR images are possible, but for the most part, in order tohave a handholdable IR camera it needs to be (physically) modified, which costs ~$250-450, depending on the camera. Google lifepixel and maxmax (and for that matter, IR photography).
And your idea about temperature is incorrect for the most part- there are specialized thermal-sensing cameras, but these do not produce the kinds of images that 99+% of IR photography is about. Certain objects/materials absorb IR effectively and so look dark (water is a good example), and others reflect it more so, and look lighter (grass and foliage especially).
Do some searching- you'll be amazed at what some "IRtists" are doing.
West