>If you use your thermal camera, find the problem in 4 minutes but charge your customer 4 hours for trouble shooting, that's cheating...

I would never do that, I prefer them to be happy it was that fast and cheap
this way they tell their friends, and come back,
>did you have a recommendation for a cam with manual focus and a focussing distance at least 10cm or shorter which is affordable for personal use?
Manual focus thermal cams are absolutly fantastic, we have one at my previous job
BUT they are just way out of access to hobby / home labs
that is why I "upgraded" mine with a DIY selectable macro using a cheap laser lens,
i shared pictures and all info about it here :
https://www.thingiverse.com/thing:4964427I think the 3D printed parts and the glue on methode, will most likely also work on other brands
>But for best performance you will need a cam with manual focus and a focussing distance at least 10cm or shorter.
exactly, looks like most thermal cams with fixed focus are made for house / car and such usage
that means many meters and up focus. That is why i made the cheap macro lens add on
I am not an optical expert so i think i was lucky to pick the right lens, since the practical usage range almost hit the same distance,
I did not want overlab, but an extra SMD and small parts focus
>Now I can also reveal to you that there is a thread on this very forum discussing these products and methods.
> And as a special deal, for you only, I will reveal the exact URL
Thanks a lot, I love direct links, makes my life easier and faster