NEC 20WMGX2 impressions / black levels question.

[CP5670]

Many LCDs are like that for some reason, with a lot more settings available on VGA than DVI. It might be because DVI preserves the image exactly while VGA often requires slight adjustments, but it apparently never occurred to them that the exact transmitted image may not necessarily be desirable.

 

[xtknight]

JRW: You've got quite a multimedia setup there (20WMGX2+FW900 = <3). Which would you say is better for watching movies/etc in the daytime?

"Black Level" may be omitted on the digital connection because it's a feature of the analog-input circuitry. It's more accurately called "offset" ("gain" is saturation). You will see these options in the Dell service menus too.

"Black Level" is available in DVI on NEC's more professional 90-series LCDs. I believe in that case it has more fine control of the backlight itself.

When you adjust brightness, you are hardly adjusting the backlight at all. The backlight has maybe 10 levels of operation, and brightness 10<>20 is set to level 1, 20<>30 to level 2, etc. Finer adjustment ((+/-1)/10) is performed by adjusting the cells more to a blocking state (the lower the value).

With LEDs though, I bet dimming will be much easier (or will it? I'm not an EE) than with CCFLs.

 

[Aambro]

I've bought NEC 20WGX2 monitor 20 days ago and i am very pleased with everything but one thing. My room is never very bright which is good considering the glossy screen. The problem is blueish or gold/brownish color i get from upper-left or bottom-right corner even when i am sitting at recommended position - 50cm away and eyes in the level of top of the screen. From "diagonal" views the black monitor turns into gold. From top it is gold in sides and black in the middle. Is it the same with yours?

It is not noticable in light room or when viewing at white or coloured images, only dimmed room and dark scene.

I also have Samsung 740T and Samsung 970P at home to compare, but i didn't notice goldish colour from whichever angle i look at them.

I've heard that the gold effect is typical for S-IPS matrixes and i wonder whether this is true.

It annoyes me pretty much since i've read all the best about viewing angles and overall quality of this display. Should i consider returning/replacing it?

Here are photos of what i mean. first row of gallery are Samsungs for comparison. Last photo is edited - increased saturation.

Link

 

[JRW]

Originally posted by: xtknight
JRW: You've got quite a multimedia setup there (20WMGX2+FW900 = <3). Which would you say is better for watching movies/etc in the daytime?

I still prefer the CRT during the day for movies but my room isnt super bright either, Its interesting seeing how much differant darker scenes look between both monitors , even when the scene isnt totally dark the CRT just has a more natural look to it.

 

[xtknight]

Originally posted by: JRW

Originally posted by: xtknight
JRW: You've got quite a multimedia setup there (20WMGX2+FW900 = <3). Which would you say is better for watching movies/etc in the daytime?

I still prefer the CRT during the day for movies but my room isnt super bright either, Its interesting seeing how much differant darker scenes look between both monitors , even when the scene isnt totally dark the CRT just has a more natural look to it.

I believe having it calibrated helps to make the LCD more natural. But at default settings I'd agree the CRT seems to bring out a more natural feel. And actually the Gaussian blur effect of a CRT makes the image seem more natural as well. Hey, small thing to sacrifice IMO though. I'd rather have sharp text as that's mostly what I use my monitor for, personally.

 

[JRW]

Originally posted by: xtknight

Originally posted by: JRW

Originally posted by: xtknight
JRW: You've got quite a multimedia setup there (20WMGX2+FW900 = <3). Which would you say is better for watching movies/etc in the daytime?

I still prefer the CRT during the day for movies but my room isnt super bright either, Its interesting seeing how much differant darker scenes look between both monitors , even when the scene isnt totally dark the CRT just has a more natural look to it.

I believe having it calibrated helps to make the LCD more natural. But at default settings I'd agree the CRT seems to bring out a more natural feel. And actually the Gaussian blur effect of a CRT makes the image seem more natural as well. Hey, small thing to sacrifice IMO though. I'd rather have sharp text as that's mostly what I use my monitor for, personally.

The only way I could get this LCD looking anywhere near CRT quality for movies is if the black levels were substantially improved ..unfortunately I dont think this is possible. Seeing Hi-Def material on the CRT with its Contrast cranked up is a real treat (Trinitrons have far brighter contrast vibrancy than Shadow mask based CRTs).

If I were doing mainly text work then i'd probably stick with a solo LCD, but I like to play games and watch movies as well plus the CRT is larger which is a bonus.

Ever since adjusting the Focus recently on my CRT it actually has suprsingly sharp text, not LCD sharp but still better than I thought it would turn out even at 1920x1200, I adjusted it again yesterday using another method which worked out great.

 

[9nines]

Originally posted by: Aambro
I've bought NEC 20WGX2 monitor 20 days ago and i am very pleased with everything but one thing. My room is never very bright which is good considering the glossy screen. The problem is blueish or gold/brownish color i get from upper-left or bottom-right corner even when i am sitting at recommended position - 50cm away and eyes in the level of top of the screen. From "diagonal" views the black monitor turns into gold. From top it is gold in sides and black in the middle. Is it the same with yours?

It is not noticable in light room or when viewing at white or coloured images, only dimmed room and dark scene.

I also have Samsung 740T and Samsung 970P at home to compare, but i didn't notice goldish colour from whichever angle i look at them.

I've heard that the gold effect is typical for S-IPS matrixes and i wonder whether this is true.

It annoyes me pretty much since i've read all the best about viewing angles and overall quality of this display. Should i consider returning/replacing it?

Here are photos of what i mean. first row of gallery are Samsungs for comparison. Last photo is edited - increased saturation.

Link

That does not look good - seems very bad backlight bleeding. Mine does not look that way. You might want to return it.

 

[JRW]

Originally posted by: 9nines

Originally posted by: Aambro
I've bought NEC 20WGX2 monitor 20 days ago and i am very pleased with everything but one thing. My room is never very bright which is good considering the glossy screen. The problem is blueish or gold/brownish color i get from upper-left or bottom-right corner even when i am sitting at recommended position - 50cm away and eyes in the level of top of the screen. From "diagonal" views the black monitor turns into gold. From top it is gold in sides and black in the middle. Is it the same with yours?

It is not noticable in light room or when viewing at white or coloured images, only dimmed room and dark scene.

I also have Samsung 740T and Samsung 970P at home to compare, but i didn't notice goldish colour from whichever angle i look at them.

I've heard that the gold effect is typical for S-IPS matrixes and i wonder whether this is true.

It annoyes me pretty much since i've read all the best about viewing angles and overall quality of this display. Should i consider returning/replacing it?

Here are photos of what i mean. first row of gallery are Samsungs for comparison. Last photo is edited - increased saturation.

Link

That does not look good - seems very bad backlight bleeding. Mine does not look that way. You might want to return it.

Id have to agree, even if i exaggerate camera settings my NEC's backlight bleed isnt nearly that bad. Mine has very minor bleed in a small patch on the extreme left. Only noticable when looking at a black screen.

 

[Zebo]

Originally posted by: Aambro
I've bought NEC 20WGX2 monitor 20 days ago and i am very pleased with everything but one thing. My room is never very bright which is good considering the glossy screen. The problem is blueish or gold/brownish color i get from upper-left or bottom-right corner even when i am sitting at recommended position - 50cm away and eyes in the level of top of the screen. From "diagonal" views the black monitor turns into gold. From top it is gold in sides and black in the middle. Is it the same with yours?

It is not noticable in light room or when viewing at white or coloured images, only dimmed room and dark scene.

I also have Samsung 740T and Samsung 970P at home to compare, but i didn't notice goldish colour from whichever angle i look at them.

I've heard that the gold effect is typical for S-IPS matrixes and i wonder whether this is true.

It annoyes me pretty much since i've read all the best about viewing angles and overall quality of this display. Should i consider returning/replacing it?

Here are photos of what i mean. first row of gallery are Samsungs for comparison. Last photo is edited - increased saturation.

Link

Your monitor is obviously defective. Heavy back light bleed and gold bleed. If anything the worst flaws you should see is slight purple on black background off angle which is endemic to IPS, one of it's flaws. All techs have flaws but the pictures I see are not IPS ones unless it's horribly defective.

 

[Aambro]

Tnx for replies that encouraged me to take action.

The photos i posted are a bit exaggerated (1/1 s aperture time). I also posted some others with camera settings here.

I am waiting for response from the seller / NEC representative. I will let you know about the progress.

EDIT: These are specs of the photos on link above:
1. Shutter speed: 1/8 s Distance:50cm Light source: Daylight
2. Shutter speed: 1/8 s Distance:50cm Light source: Lightbulb
3. Shutter speed: 1/8 s Distance:90cm Light source: Daylight
4. Shutter speed: 1/1s Distance:50cm Light source: Daylight
5. Shutter speed: 1/1s Distance:50cm Light source: Lightbulb

 

[xtknight]

You can see a tad bit (actually a lot) of gold if you look at a diagonal angle on a black screen. Doesn't appear unless you're looking at a really weird angle, though. Just an S-IPS thing and I think the coating makes it worse.

 

[Zebo]

Originally posted by: xtknight
You can see a tad bit (actually a lot) of gold if you look at a diagonal angle on a black screen. Doesn't appear unless you're looking at a really weird angle, though. Just an S-IPS thing and I think the coating makes it worse.

Yours might but as I recall it was defective too with back light bleed. Mine at any angle shows no golden.. Purply sure.