Originally Posted by gypsygib
According to the lagom test the PG278Q is perfect. So is my SP4. I tried to test my wife's Macbook Pro but I don't know how to get her OS to 1:1 pixel mapping. I tested my Plasma TV and it failed miserably at every sharpness setting but I don't think the test applies to plasma TV. That thing has a very sharp 1080p image. Anyways, I think lowering sharpening after 100hz has something to do with the Nvidia GSYNC board. It handles the scaling as well. Maybe they're not all tuned properly. Looking more closely, the other (yellow/arctic blue) monitor fails the test as well at 144Hz but the dark rectangles/squares aren't as dark. I suppose I could get used to it, reading text is fine but everything is just a bit softer and games not as sharp as they should be, kinda a like there's a very slight AA on everything. My biggest issue is that it makes the image have less pop than it should. I've seen some reviews saying the XB271 isn't as clear as the PG279Q but no one made a direct reference to it being due to an incorrect sharpness setting in hardware.
Weird that increasing Hz lowers sharpness though. Really don't know why the monitor didn't ship with a sharpness control. This is my forth one and the only one that doesn't have major uniformity issues, of all the things to be wrong it's sharpness? Really? that's the one thing that has nothing to do with manufacturing quality.
Post pictures probably at best a bit out of focus of the lagom sharpness test, would like to see how your lower sharpness looks compared to my photos. Is it quite the same or yours has strong dark rectangles?
XF270HUA is FreeSync, they do not come with sharpness either, only a super sharpness post processing filter ON/OFF which doesn't work as a direct flat pixel sharpness adjustment but it has some algorithm that chooses what to sharpen and how much. It adds black outline to color text on gray background for example yet lagom sharpness image is untouched or almost untouched, as far as I can tell it is some "smart" sharpness, it has an algorithm that chooses what and how much to sharpen, for older people I can see this being useful when they want things to pop out and look sharp, photos... it butchers them with adding dark outlines everywhere it can, it's all it does, add dark outline to edges it detects, it's some edge detection algorithm.
I can't see a big difference compared to mobile phone. They both seem to have more or less neutral sharpness.
At first the XF270HUA looked nice and sharp to me, especially compared to the messed up Samsung VA split pixel structure but even compared to older TN I suppose which is my replacement hold over monitor.
Connected back my replacement to check for ya, but dunno what it has as sharpness, let's see.
You're right the XF270HUA is also blurred, damn it, the replacement TN with sharpness that I use set to 3 has perfect neutral sharpness but because of it's low contrast it's not that good perceived sharpness wise, otherwise the pixels on it are neutral.
No idea why Acer messes with the sharpness on a freakin' digital signal, both on XF270HUA and even the Gsync module infested XB variants?...
El cheapo TN with gamma going from bright 1.9 to dark 2.0:
XF270HUA with gamma 2.1:
So yes Acer does something to the sharpness it seems
If I have to guess from looking closely at black text on grey background and the lagom fine lines test picture I would say XF270HUA is a little bit blurred.
El cheapo TN 1:0 XF270HUA, cheapo TN is neutral sharpness it seems, XF270HUA is blurry by a tiny bit.
It's not something I would return the monitor for but one can see it after a while of using it or having a similar contrast neutral sharpness monitor to compare with side by side. One kind of wonders are my eyes messing with me or is it tiny bit blurry as it is hard to see the blur, it's there but it's "minimal".