Very confused on new purchase

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topdownshot
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Re: Very confused on new purchase

Post by topdownshot » 15 Apr 2014, 10:36

lol, i've already thought the same and tried the warmer profile 5000k. maybe i'm just crazy, but this doesn't make any sense to me.

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Chief Blur Buster
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Re: Very confused on new purchase

Post by Chief Blur Buster » 15 Apr 2014, 10:48

topdownshot wrote:lol, i've already thought the same and tried the warmer profile 5000k. maybe i'm just crazy, but this doesn't make any sense to me.
Screen size is much larger than 17", so a lot more vision is covered.

-- Just to confirm, you are getting eyestrain only during motion?
If YES, go to next question

-- Have you ever had eyestrain with CRT computer monitors?
If NO, then new theory for you:
(one which actually is true for some forum members here):

It may be that the massive ghosting of a 50ms screen, combined with the small size, meant you never tracked motion with your eyes. Motion on such a screen was so artificially bad that it was easy to keep your eyes still while seeing motion. Now, the much clearer (but still not perfectly clear) motion, combined with the larger screens, means you are now beginning to track your eyes more often. But the motion still isn't "perfect", and is now revealing a form of eyestrain that is related to motion blur.

Do you notice you are moving your eyes around more often with your new screen? Looking at motion more often? Your eye-focussing muscules may be straining to focus on blurry motion.

If you never had eyestrain with CRTs due to the clarity of their motion -- then are you aware that even though 120Hz is less than 50% more than 75Hz, that the use of strobe backlights can make 120Hz+strobe more than 10x clearer motion (motion blur trail size is an order of magnitude smaller) than 60Hz and 75Hz displays? See http://www.blurbusters.com/faq/60vs120vslb for an example comparison.

Persistence is explained at http://www.testufo.com/eyetracking and the use of strobing to reduce motion blur is explained at http://www.testufo.com/blackframes (These are explanation demos anyway; Hardware based blur reduction performs much better)

This may NOT be your solution, but if your eyestrain is occuring only during motion, this is a stone left unturned at the moment. It happens, but there are people in this forum who find less eyestrain with motion-blur-eliminating strobe-backlight monitors (among people who had no eyestrain with 100Hz+ CRTs but lots of eyestrain with modern LCDs -- usually it's vice versa -- but there are people more sensitive to motion problems than flicker problems, and fixing motion blur becomes the "lesser of evil"). If your eyes were always comfortable with CRT and you liked the motion clarity on them, then switching to a 120Hz monitor with a motion blur reduction option, may a actually help. It is counterintuitive (normally flicker is always bad, but apparently motion clarity is sometimes the worse evil for a few individuals), so that's why the LightBoost FAQ has both entries "Why Does LightBoost Have MORE Eyestrain?" as well as also "Why Does LightBoost Have LESS Eyestrain?" because these situations definitely are happening for different people.

Now, if you are also getting eyestrain on static images (no motion), then this all almost certainly wouldn't be the reason. So it's important to ask yourself -- are you definitely getting eyestrain only during motion? If not, and you are affected by static images too, then you have to keep looking for the cause.
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DICKTracy
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Re: Very confused on new purchase

Post by DICKTracy » 15 Apr 2014, 19:16

Chief Blur Buster wrote: It may be that the massive ghosting of a 50ms screen, combined with the small size, meant you never tracked motion with your eyes.
Very interesting theory. I never thought that it could simply be that he has started to use his eye muscles in a way that he never has before. Much the same way that your leg muscles will be very sore after each run when you just start to take it up.

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Re: Very confused on new purchase

Post by Chief Blur Buster » 17 Apr 2014, 15:10

DICKTracy wrote:Very interesting theory. I never thought that it could simply be that he has started to use his eye muscles in a way that he never has before. Much the same way that your leg muscles will be very sore after each run when you just start to take it up.
Yep -- this has happened to quite a few people who upgrade to bigger screens and also with clearer motion. Your eyes get a much bigger workout. This creates a new form of eye strain, especially if you're an all-day computer user.

If you feel that this is simply the case -- Simply add more breaks, and push the screen a bit further away from your face (use bigger fonts) at least until you're more used to it. A farther screen means less angular distance for your eyes to track, which may actually reduce eyestrain for you. Use a DPI-aware OS such as Windows 8, and use 150% size for the Windows user interface -- to make everything comfortably big as you have your monitor further away from your face. At least as a temporary training-wheels, especially if you spend hours a day in front of your computer monitor.
Head of Blur Busters - BlurBusters.com | TestUFO.com | Follow @BlurBusters on Twitter

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Forum Rules wrote:  1. Rule #1: Be Nice. This is published forum rule #1. Even To Newbies & People You Disagree With!
  2. Please report rule violations If you see a post that violates forum rules, then report the post.
  3. ALWAYS respect indie testers here. See how indies are bootstrapping Blur Busters research!

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