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ensete I just received OSRAM DULUX INTELLIGENT LONGLIFE CFLs. They are a no go as they flicker(although not as obvious as other cheap CFLs on my slow motion video) and are not flicker-free as advertised. I will used them on a hallway probably.
I will come back in the next days with links from the LED spots/light fixtures(DC transformer included) I use.
I also ordered a few LED filament bulbs that are marked on this website as FfT(Flicker Free Technically):
https://www.derlichtpeter.de/testergebnisse/
I will test them to see if I get problems from them and come back with feedback.
Also low wattage(under 40w) incandescents or halogen bulbs tend to flicker๏ผ I do prefer warm DC driven LED light instead as my eyes don't get as tired. Also I would stay away from most LED bulbs as the tehnology is not there yet(haven't seen a LED bulb that I don't have problems with but I'm going to try from time to time).
This also seems promising although they don't have any below 3000K:
http://www.skywider.com/products/liquid-filled-lamp/