IR with Cheetahs

Update some days later!

After an “ah hah” moment with photo processing for images from the IR camera today, I revisited my Cheetah.  Much better result.

Revised processing
Revised processing using a camera profile and colour channel mixing

Processed using my previous ‘play with the sliders in ARC’ method :

For my daily amble today I took my old Sony A580 to the zoo.   I had the filter which normally sits in front of the sensor removed a few months ago and replaced with a clear one, aka a full-spectrum conversion.  Sensor filters normally keep out most of the infra-red and UV light which is outside the human eyesight range, so that photographs look ‘right’ in terms of colour.  This camera doesn’t have that any more.  Focusing is a bit of a challenge (or at least it was with the Tamron 70-300mm lens I was using today), but the results can be interesting when not utterly rubbish.   These are the straight-out-of-camera colour, and lightly processed b&w versions.

IR cheetah

Crisper fur, but not looking at the camera

Cheetah IR

And, trying a macro lens back in m’garden.  This Sony 35mm lens seems much sharper than the Tamron one, and the colours are quite different.

IR monarch

I really need to remember to take this camera next time I go on a road trip – IR is absorbed quite differently to visible light by vegetation, and I’d love to try take some of those spooky landscape pictures which inspired me to get my retired camera converted in the first place.

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