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Acer XB270HU 27" 1440p 144Hz G-Sync IPS ULMB Discussion Thread - Page 86

post #851 of 4031
Monitor was pulled from Newegg Canada for some reason.
post #852 of 4031
Still trying to convince myself to get this monitor.

If anyone has this and windows 7, can you try running calibrate display color in windows, go to the gamma test and see if you can fix the gamma WITHOUT using the slider Windows gives you? ONLY using the OSD settings?

Reason I ask is many people with nvidia cards seem to have games reset that slider as the game is launched full screen, making it useless. But if gamma could be fixed with just the monitor's OSD, then its not an issue.
Edited by deizel5 - 3/27/15 at 11:58pm
post #853 of 4031
Quote:
Originally Posted by deizel5 View Post

If anyone has this and windows 7, can you try running calibrate display color in windows, go to the gamma test and see if you can fix the gamma WITHOUT using the slider Windows gives you? ONLY using the OSD settings?

Reason I ask is many people with nvidia cards seem to have games reset that slider as the game is launched full screen, making it useless. But if gamma could be fixed with just the monitor's OSD, then its not an issue.

Is something wrong with the gamma? I was really hoping for the same 2.4 average gamma TFTCentral measured. 2.4 is what is recommended by BT.1886; it looks nice and high contrast and, if done according to BT.1886, avoids shadow crush at the same time. I wish TFTCentral reported a 20 point measured gamma, not only the average, so I could tell if it was really BT.1886. A good 2.2 pure power gamma is impossible without shadow crush (on an IPS or TN) and sRGB looks washed out compared to BT.1886.

There are three options in the OSD according to TFTCentral, 2.0, 2.2, 2.4. They all measured higher at 2.1, 2.4, 2.7. This sounds about right for BT.1886 depending on how you measure the gamma so I am hopeful.

Mine is on backorder so I cannot measure it yet. frown.gif
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post #854 of 4031
Quote:
Originally Posted by Asmodian View Post

Is something wrong with the gamma? I was really hoping for the same 2.4 average gamma TFTCentral measured. 2.4 is what is recommended by BT.1886; it looks nice and high contrast and, if done according to BT.1886, avoids shadow crush at the same time. I wish TFTCentral reported a 20 point measured gamma, not only the average, so I could tell if it was really BT.1886. A good 2.2 pure power gamma is impossible without shadow crush (on an IPS or TN) and sRGB looks washed out compared to BT.1886.

There are three options in the OSD according to TFTCentral, 2.0, 2.2, 2.4. They all measured higher at 2.1, 2.4, 2.7. This sounds about right for BT.1886 depending on how you measure the gamma so I am hopeful.

Mine is on backorder so I cannot measure it yet. frown.gif

no no i dont have the monitor. im just annoyed that my current monitor by default has super high gamma and no osd settings to fix, and games will reset windows gamma.
post #855 of 4031
Do you mean washed out or oddly dark? A gamma of 2.0 looks much lighter or more washed out compared to a gamma of 2.4. Usually the gamma is too low, not too high. wink.gif

Anyway, you have three gamma settings to chose from so you will probably be happy with one of them. thumb.gif
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post #856 of 4031
Quote:
Originally Posted by Asmodian View Post

Do you mean washed out or oddly dark? A gamma of 2.0 looks much lighter or more washed out compared to a gamma of 2.4. Usually the gamma is too low, not too high. wink.gif

Anyway, you have three gamma settings to chose from so you will probably be happy with one of them. thumb.gif

If you're going to invest in an IPS display, especially one the price of the XB270HU...i'd highly recommend spending a bit extra and springing for a colorimeter to fully calibrate your display. Something like a Spyder4Pro, or an earlier version would be a worthwhile investment. I'll probably set everything on all 3 of my XB270HUs when they arrive to 50%, and then adjust the settings for each one individually according to my Spyder4Pro.

Colorimeters make a tremendous difference in color accuracy and I would neve:thumb:r own another monitor that wasn't adjusted by one. I couldn't believe how off my Shimians were before I calibrated them...just worlds apart in terms of gamma/color reproduction. Not only that, but it's awesome that the Spyder software will automatically apply saved calibration settings per-monitor if a game or program randomly resets the calibration settings. thumb.gif
Edited by jcde7ago - 3/28/15 at 1:09am
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post #857 of 4031
Quote:
Originally Posted by jcde7ago View Post

If you're going to invest in an IPS display, especially one the price of the XB270HU...i'd highly recommend spending a bit extra and springing for a colorimeter to fully calibrate your display. Something like a Spyder4Pro, or an earlier version would be a worthwhile investment. I'll probably set everything on all 3 of my XB270HUs when they arrive to 50%, and then adjust the settings for each one individually according to my Spyder4Pro.

Colorimeters make a tremendous difference in color accuracy and I would neve:thumb:r own another monitor that wasn't adjusted by one. I couldn't believe how off my Shimians were before I calibrated them...just worlds apart in terms of gamma/color reproduction. Not only that, but it's awesome that the Spyder software will automatically apply saved calibration settings per-monitor if a game or program randomly resets the calibration settings. thumb.gif

You could also ghetto-calibrate it. Pull up an identical image on your iPad or iPhone, which is generally calibrated quite well. Then adjust away until your monitor looks like the image on your iOS device.
post #858 of 4031
Quote:
Originally Posted by jcde7ago View Post

If you're going to invest in an IPS display, especially one the price of the XB270HU...i'd highly recommend spending a bit extra and springing for a colorimeter to fully calibrate your display. Something like a Spyder4Pro, or an earlier version would be a worthwhile investment. I'll probably set everything on all 3 of my XB270HUs when they arrive to 50%, and then adjust the settings for each one individually according to my Spyder4Pro.

Colorimeters make a tremendous difference in color accuracy and I would neve:thumb:r own another monitor that wasn't adjusted by one. I couldn't believe how off my Shimians were before I calibrated them...just worlds apart in terms of gamma/color reproduction. Not only that, but it's awesome that the Spyder software will automatically apply saved calibration settings per-monitor if a game or program randomly resets the calibration settings. thumb.gif

Haven't done this before, is there some kind of guide for this or is it fairly straight forward. Might just purchase a Spyder if it really is as worth it as you say it is.
post #859 of 4031
I feel like people here are worried too much about dead pixels. To some extent I agree, dead pixels or stuck pixels on a premium display like this is nigh unacceptable and are quite annoying, but what's the use in complaining until you've actually tried to solve the problem? I've owned multiple displays which have over time developed/shipped with dead pixels and many times I was able to fix the dead pixels. Even if they can't be fixed, the other features of the monitor WAY outweigh the cons of a few dead pixels IMO.

Btw, did anyone else order their XB270HU from CDW?
post #860 of 4031
Quote:
Originally Posted by HyperMatrix View Post

You could also ghetto-calibrate it. Pull up an identical image on your iPad or iPhone, which is generally calibrated quite well. Then adjust away until your monitor looks like the image on your iOS device.

I'll be perfectly honest, I used to think the same way; after having owned a Spyder4Pro for a long time now, I could never do without calibrating my monitors ever again. Ghetto calibrating it will never come close to the accuracy of a Colorimeter, and that's not an exaggeration by any means. Just ask any professional photographer. thumb.gif
Quote:
Originally Posted by LordVarian View Post

Haven't done this before, is there some kind of guide for this or is it fairly straight forward. Might just purchase a Spyder if it really is as worth it as you say it is.

It is fairly straightforward, but you can also watch some YouTube vids on this. Basically, there are specific target values for Gamma, White Point, Brightness, etc that you aim for, and the software even asks what kind of settings your display can change/support via its osd (so if you can change gamma, brightness, color, temp, etc on your monitor, or only brightness, the software can compensate). The colorimeter (Spyder4Pro in my case) hangs over your monitor and measures color accuracy and white/black levels, brightness, etc, over the course of a few tests, and asks you to adjust things accordingly based on the target values so that it's really accurate. After about 10 minutes of testing and tuning (mostly automatically on its own), it basically spits out a profile that is automatically loaded into both Windows and a LUT (look-up table) that's loaded straight to the GPU to make sure your calibration settings are in effect.

Even if games or programs override your settings, the software will automatically load the LUT to the GPU to keep everything calibrated (you can set this in increments of minutes, hours, or even only load the LUT once on start up and never again unless you manually choose to reload your calibration after, say, a game changes it).

I'd have to say that a colorimeter is one of the best investments i've ever made; the color reproduction and calibration accuracy of one can never be matched by just eye-balling a monitor and using something else as a basis for comparison, period. Well worth the cost (although I just looked and the S4Pro is $169 on Amazon, I bought mine for $89). No two of the same monitors (even the same make/model) are really ever the same, so using, say, plain .icc profiles from Windows pulled from someone else's calibration will probably never look the same on your monitor as it does applied on the monitor of the person whom the .icc profile was pulled from.

The first thing i'll be doing to my XB270HUs once they arrive and are powered on is throwing my Spyder4Pro on 'em and getting them calibrated. thumb.gif
Edited by jcde7ago - 3/28/15 at 1:38am
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