Software for Blue light and PWM protection

Night Shift Review (OSX)

Night Shift is the Apple native integrated blue light reduction feature. Night Shift was first introduced onΒ March 21, 2016 as part of theΒ iOS 9.3. 1 year after Night Shift first arrived for iPhone onΒ Mar 27, 2017 Apple finally added it also to Mac OSX or as now is called macOS. The goal of this review is to show you how … Read More

What is the best Color temperature?and What value reduces the most Blue light

A lot of users asked me what is the best value of Iris for blue light reduction. Well in this article I’m going to look at exactly this with measurements. This will be helpfull for users of other software products like f.lux, Redshift, SunsetScreen, Night Shift and Night Light. The Android Twilight and Night mode use different algorithms than Color … Read More

SunsetScreen Review (Windows)

SunsetScreen is software for blue light reduction. Made by Daniel White in 2015 SunsetScreen is similar to f.lux, Redshift, Night Shift and to Iris blue light feature. Something which makes SunsetScreen better than f.lux is the ability to set custom night duration by time rather than location and the ability to set day and night brightness aside from color temperature … Read More

Dark mode Review (Windows)

  In addition to Night Light you can also enable Dark mode or the Windows 10 Dark theme. The Settings application itself will immediately turn dark, as will many other β€œUniversal Windows Platform” applications. However, it’s up to each developer to support the dark theme, and some applications will continue using their normal colors. This option also doesn’t affect desktop … Read More

Night light Review (Windows)

Night light is the Microsoft blue light reduction feature. It comes built-in into Windows 10 Creators update. It was also available in the Windows 10 Insider preview before also. Night light is not available for Windows 7. If you want to use something similar to Night light on Windows 7, Windows Vista or Windows XP, you can use Iris. If … Read More

How Iris reduces PWM flicker?Short explanation

Modern monitors use PWM to control the brightness of the screen. This is not problem at maximum brightness, but at low brightness it causes eye pain. Iris is fixing this by controlling the brightness with the video card and by changing the white point of the monitor. This ensures that your backlight is at high frequency even at low brightness … Read More

How Iris reduces PWM flicker?Medium size explanation

How modern monitors work? All monitor have some kind of flicker rate. This is normal, because the way semiconductors work requires them to turn ON and OFF in order to work properly. Every modern display uses some kind of LED, OLED, LCD and every other monitor technology used today. The only way to completely eliminate the flicker from your electronic … Read More


Color mapping experiments: what the average human sees In the late 1920s William David Wright and John Guild independently conducted a series of color matching experiments that mapped out all the colors the average human (meaning the average of the humans in the experiments) can see. In 1931 color scientists used the results of the Wright and Guild experiments to … Read More


On the one hand, light comes from the sun or other radiant sources, and is refracted by mediums (water, the atmosphere, glass) and diffusely or specularly reflected by surfaces. On the other hand, color isn’t out there in the world in the same tangible way that light is. Rather color is part of how we sense the world around us. … Read More

Iris mini Installer for Windows (Minor Build)

Fixed Ordinal 354 could not be located in the dynamic library LIBEAY32.dll