- Edited
Hi, I did not read whole discussion, I just want to share my experience: I am using IRIS cca 1 year on notebooks Thinkpad T220 and E580. I like low brightness but on T220 & E580 Ive got headache after dimming my screen. With this app, it is quite better. I can use my notebook more than hour.
I did not use any other app, this is my first one (so I can not compare). What is good is, that I could install it without administrator rights (company computer).
It looks, that they dont use PWM for dimming, they just lower brightness of output (picture) on screen. The downsize of this is, that you can not use it for sharing the screen during meetings - projectors, webex or printscreens - they are all too dark.
Right now I have following settings: Windows 10. Laptop brightness on 100%: Iris settings 4485K / 39%.
Cheers.