nnthemperor
Member
Fair enough best, but the post was about getting rid of eye strains and headaches from looking at the screen which is also what the topic is about. So I don't see any thing that could be misleading here.
I'll add that I also began experiencing severe eyestrain after buying the SP3. I've been using computers heavily for 20 year s with no eye strain problems so this was a shock.
I wasn't sure what the cause was so I stopped using my desktop & tablets, and only iPad & iPhone. The worst symptoms disappear right away, most are completely gone within a few days. The DPI/size is definitely not the cause because I am able to remote in to my desktop from my iPad, which makes for a really miniaturized display.
I did have a SP2 for a year, but I almost always ran it on maximum brightness. The SP3, I have almost always ran dim because the screen was bigger and tints more toward blue (flu.x appears to crash the video card.) I really appreciate the info in this thread & Ullit's graphs.
Another interesting thing is I have mostly switched to LED bulbs in my house. Now I wonder if that is optimal.
Thanks Besthsq for posting this. Now I do not have to consider buying an SP3 anymore, since it clearly has the same PWM issue as SP2. Though setting the backlight at 100 is a solution, it still strains the battery and reduces the contrast of the display. With SP2 movies look quite bad when backlight is 100, so for such an expensive device, it is not a solution.
Great to see that more people are acknowledging the problem and spreading the word. Maybe, just maybe SP4 would then not have the same issue anymore.
For the people who do not understand this issue, it's a bit like celiac disease. Two people eat a slice of bread, the other gets a horrible stomach ache, the other has not problems. Then the one who does not have any prolems, starts to suggest "oh, it's because you didn't drink enough water with the bread" or " you should always toast your bread to avoid problems" or maybe you just think you have a stomach ache"
Celiac is a rare but widely and scientifically recognized problem. The PWM flicker issue is similar, but not yet scientifically understood, what is the exact mechanism why the eyes get irritated.
And while some think it does not cause permanent eye damage, the problem is still so bad, that if your eyes get bloodshot so that people start asking whether you have been crying or have a hangover, it is a problem at work. Then of course the constant irritation and soreness of the eyes.
So please do not comment if you do not understand.