Hi everyone.
Just wanted to share what you can expect to get if you replace the stock lens on seek thermal pro with a lens of different focal length.
Combined the test results into a video:
I think I'll try to make a more portable lens housing for the 38mm lens in the upcoming days and do some more field tests. Overall, I'm actually pleasantly surprised how good the contrast is maintained on a 38mm lens.
On a side note — both lenses would also work as a macro lens if used on top of the stock lens (instead of replacing it).
These are the lens I used and the overall setup: