Igor's Blog

You've probably heard of f.lux, an app that reduces the amount of blue light that your screen puts out at night. That is meant to help with sleep problems due to distorted circadian rhythms caused by the blue light. I've been using f.lux for a few weeks now to see if it actually has some sort of effect, read on to check out what I observed.

f.lux was available for OSX until Apple forced its removal. In an ironic twist of events however, Apple is including this very same feature in iOS 9.3, called Night Shift. That is not the focus of this article however, so lets move onto the desktop version.

So lets see the difference. This is my monitor without f.lux running...
IMG_0486.jpg


Enabling f.lux noticeably reduces the amount of blue and makes the whole picture take on a red tinge.
IMG_0487.jpg




At first this transition doesn't feel very natural and the colours do look very off, but after a few minutes your eyes adjust and you don't notice it as much.

Here's what the transition looks like...



Ok so did I notice any difference in sleep patterns? Well honestly I can't say that I've noticed a huge difference. However the colour temperature change works really well as a reminder that it's evening and maybe you should get off the computer and relax. In addition, the redder colours do tend to make my eyes feel heavier. I guess that's the intended effect, but it is subtle.

Will I continue to use f.lux? Yes and I would recommend it to others just don't expect a complete change if you were having difficultly sleeping after working away on the computer for the whole night!

-i



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About — I'm an enthusiastic software engineer and consultant interested in many fields including J2EE, programming, electronics, 3D printing, video games, wood working and gardening.
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The views expressed in this blog are my own and not those of my employer.
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