That looks like a hotspot caused by the lens that’s why I don’t use my Olympus pro lensesHad to send the GM1 back to the doctor’s because of the triangle shaped light leak that was appearing in every frame. They reckon it’s most likely coming from the electronic IR shutter monitor and will have to build a screen around it to mask it from the sensor...
As shot from camera...
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Majorly pissed off but I’ve had time to play with Luminar to get my post processing and channel swapping dialled in...
It doesn't look quite like a lens hotspot to me. Lens caused ones tend to be mostly in the center of the image, while this one is strongest at the top. Otherwise the appearance is indeed similar.That looks like a hotspot caused by the lens that’s why I don’t use my Olympus pro lenses
Hope this helps
Something else I learned is all of my class glass due to infared have “hotspots” in the center of the image. After speaking with some infared shooters that have been around infared suggested I use lenses that are of lesser quality so I now have an Olympus 14-43 zoom lens, no hotspots below f11. That said that’s not to say this isn’t a good lens it is it’s just not one of Olympus pro series lenses
I never had any issues with my Oly 17/2.8, and my Panasonic 14-42 kit lens has always been fine on my converted body, but gives hot spots sometimes when used for long exposure IR on a standard body. The body cap lenses seem to work OK as well, but holding a filter in front of them is a bit awkward - a cokin P adapter ring screwed to the filter helpsI have found this to be mostly true in my old limited experience. I bough the Panasonic 14mm f2.5 as it was reported to not have hot spots and I have found this to be true. One was just sold the other day here for something like $85 so a cheap one to search for to shoot IR and it is tiny, almost body cap sized. On the other hand, when I got my 12-100 PRO and gave it a try on my IR camera, terrible hotspots.
A few I can recall off hand are: My old 4/3rds Sigma 30/1.4 gave me pretty bad hot spots. My 45/1.8 does as well but only sometimes (I need to experiment with it more to see). I also never really had any issues with my old 4/3rds 12-60 SWD nor the non-SWD 50-200 and looking through my IR shots both the 17 & 25 f1.8 seemed to have behaved themselves.