This the second of the three shots I'll be posting that were taken using a Hoya R72 infrared filter (which I borrowed from Andrew Thatcher earlier this week). Of the three, this is probably the least dramatic, but I did think it was worth posting too.

From a technical point of view, shooting using an IR filter is relatively straightforward, but if you do decide to give it a try there are a few things you need to bear in mind. First, you need to compose your shot before attaching the filter as you can't see through them, i.e. they block available light.

Second, you will need to work out the exposure manually as your camera's meter will suggest a near-normal exposure – which will be way off. For example, this one was shot in bright sunlight, yet the exposure was around 20s at f/8.0.

Third, judging whether you have a correct exposure is a bit difficult as the exposure will be heavily biased towards the red channel. If you use the brightness histogram on your camera you risk overexposing the shot, so switch to using the RGB histogram. That way you can check the red channel and make sure there isn't any clipping.

If you're interested, the original is here:


On a totally different matter: I was interviewed by Scott Anderson from a couple of weeks ago. If you're interested, you can listen to the interview here:

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