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Old 3rd July 2018
Petrochemist Petrochemist is offline
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Re: m4/3 lenses for IR

I've used the Panny 14-42, 50-200 Olympus 9mm BCL & 17mm/2.8 for IR without any hot spot issues on my converted camera.
But I have seen hot spots with the 14-42 when shooting IR on a non-converted camera, So far at least the 50-200 has been free of hot spots with the standard camera.
I've also seen hotspots with c-mount lenses but possibly this was down to the extension tubes I was using.

I think hot spots are less of a problem with false colour IR (it's a problem with the IR part of the image) but chromatic aberration can be an issue with wider wavelength images.
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