Dell U2412M

Is there any way of reducing the flicker on this monitor?
I just bought 2412 few days ago, could live with the AG coating, but after the first 4-hour work session I felt my eyes are tired and realized that the flicker is so distracting and tiring.
(I downloaded the ICC profile from TFT central, did custom mode and colors, and reduced the brightness/contrast to 35/75)
It's true that I can't see the flicker above 80% brightness, but that's totally useless.

Could someone comment on the amount of flicker on Samsung S24A850 compared to 2412? Samsung claims that it has 120hz LEDs in, but I could find no info on the ones in 2412. Anyone found this?
 
nahero said:
Is there any way of reducing the flicker on this monitor?
I just bought 2412 few days ago, could live with the AG coating, but after the first 4-hour work session I felt my eyes are tired and realized that the flicker is so distracting and tiring.
(I downloaded the ICC profile from TFT central, did custom mode and colors, and reduced the brightness/contrast to 35/75)
It's true that I can't see the flicker above 80% brightness, but that's totally useless.

Could someone comment on the amount of flicker on Samsung S24A850 compared to 2412? Samsung claims that it has 120hz LEDs in, but I could find no info on the ones in 2412. Anyone found this?
Click to expand...


I'm dealing with the same issues and would greatly appreciate any answers to nahero's questions.

Nahero, the best solution I have found for flicker/fatigue so far is to turn the brightness to 100% and reduce the RGB channels to around 50-60%, depending on how bright you want your display. This seems to reduce the flicker when moving my eyes around the screen quickly. However, I'm not sure what sort of negative impact this has on image quality, if any.
 
nahero said:
Is there any way of reducing the flicker on this monitor?
I just bought 2412 few days ago, could live with the AG coating, but after the first 4-hour work session I felt my eyes are tired and realized that the flicker is so distracting and tiring.
(I downloaded the ICC profile from TFT central, did custom mode and colors, and reduced the brightness/contrast to 35/75)
It's true that I can't see the flicker above 80% brightness, but that's totally useless.

Could someone comment on the amount of flicker on Samsung S24A850 compared to 2412? Samsung claims that it has 120hz LEDs in, but I could find no info on the ones in 2412. Anyone found this?
Click to expand...

It's less on the S24A850. I have used both screens and the flicker is basically non-existent on the S24A850 until you hit very low brightnesses.

The anti-glare coating is the anti-glare coating. You can get rid of it, and void the warranty, or you can just get a new screen (which would be easiest) likely.

@poindexter the only negative impact of reducing RGB channels to 50 - 60 would be on contrast ratio/brightness.
 
Just ordered up my U2412M. Getting into digital photography, and want something a bit nicer then my Acer 24.3" I have now.
 
Judging by the 93 pages of this thread, I'm guessing there is no concensus of opinion on this monitor...
 
roach9 said:
Judging by the 93 pages of this thread, I'm guessing there is no concensus of opinion on this monitor...
Click to expand...

Some people are never happy. *shrug* I trust Dell not to make a shitty Ultrasharp this late in the game.
 
10e said:
It's less on the S24A850. I have used both screens and the flicker is basically non-existent on the S24A850 until you hit very low brightnesses.

The anti-glare coating is the anti-glare coating. You can get rid of it, and void the warranty, or you can just get a new screen (which would be easiest) likely.

@poindexter the only negative impact of reducing RGB channels to 50 - 60 would be on contrast ratio/brightness.
Click to expand...

10e, you're right. Blacks don't look as deep using this method. Doesn't help the electricity bill either :D
 
Ruoh said:
Some people are never happy. *shrug* I trust Dell not to make a shitty Ultrasharp this late in the game.
Click to expand...

I don't think there's anything shitty about the 2412. For the price, I think it's an amazing monitor. It just so happens I can see the strobe effect of the backlighting. My girlfriend can't. Lucky her.
 
Ordered mine last Thursday, it shipped Friday, I received it this morning. So 2.5 days roughly to ship. Not bad since it came from the US into Ontario Canada.

Gonna hook it up tonight and see what I think.
 
Initial impressions:

This thing is big. It may not be a huge difference from my 16:9 24" (technically it was like 23.5) but the vertical difference alone makes it seem like a much much bigger monitor.

It seems... kind of dark. Maybe I just need to calibrate it, but it seems like the colours arent quite as vibrant because it just seems like everything is a little too dark (in game).

I will be calibrating it this weekend using my eye1. Any suggestions on which program to use/ which guides I should follow? I calibrated my tv last year and havent really done it lately, so I am rusty on the whole thing.

I like that it can slide up or down quite a bit, and the tilt is nice.

Overall, glad I made the purchase. But to those who think it will be a mind-blowing crazy new world over a TN, it really isnt (at least my initial impression leads me to believe). Maybe once I get it calibrated I will think overwise, but I just dont see a HUGE difference between this and my old TN panel yet.
 
roach9 said:
Judging by the 93 pages of this thread, I'm guessing there is no concensus of opinion on this monitor...
Click to expand...

Nah, it's a great monitor, this has mostly been people talking about theirs, posting info on revisions, price, ship times, and calibration settings, aside from a troll or two,

It was pretty much

Troll who doesn't own it: "This has terrible input lag, look how much it sucks for gaming"

10 people who own it: "It games fine for me"
 
Tumdace said:
Initial impressions:

This thing is big. It may not be a huge difference from my 16:9 24" (technically it was like 23.5) but the vertical difference alone makes it seem like a much much bigger monitor.

It seems... kind of dark. Maybe I just need to calibrate it, but it seems like the colours arent quite as vibrant because it just seems like everything is a little too dark (in game).

I will be calibrating it this weekend using my eye1. Any suggestions on which program to use/ which guides I should follow? I calibrated my tv last year and havent really done it lately, so I am rusty on the whole thing.

I like that it can slide up or down quite a bit, and the tilt is nice.

Overall, glad I made the purchase. But to those who think it will be a mind-blowing crazy new world over a TN, it really isnt (at least my initial impression leads me to believe). Maybe once I get it calibrated I will think overwise, but I just dont see a HUGE difference between this and my old TN panel yet.
Click to expand...

I used ColorHCFR to dial in the individual R,G,B channels for a D65 whitepoint, and the 14-day trial of basiccolor to build an ICC profile.
 
Tumdace said:
Initial impressions:

This thing is big. It may not be a huge difference from my 16:9 24" (technically it was like 23.5) but the vertical difference alone makes it seem like a much much bigger monitor.

It seems... kind of dark. Maybe I just need to calibrate it, but it seems like the colours arent quite as vibrant because it just seems like everything is a little too dark (in game).

I will be calibrating it this weekend using my eye1. Any suggestions on which program to use/ which guides I should follow? I calibrated my tv last year and havent really done it lately, so I am rusty on the whole thing.

I like that it can slide up or down quite a bit, and the tilt is nice.

Overall, glad I made the purchase. But to those who think it will be a mind-blowing crazy new world over a TN, it really isnt (at least my initial impression leads me to believe). Maybe once I get it calibrated I will think overwise, but I just dont see a HUGE difference between this and my old TN panel yet.
Click to expand...

I just got mine and finished calibrating it and have the opposite opinion. It is a clear night and day upgrade from my (decent and calibrated) TN. I used my i1 LT to calibrate it and the results are just absolutely perfect. It really makes my TN look bad.
 
nahero said:
Is there any way of reducing the flicker on this monitor?
I just bought 2412 few days ago, could live with the AG coating, but after the first 4-hour work session I felt my eyes are tired and realized that the flicker is so distracting and tiring.
(I downloaded the ICC profile from TFT central, did custom mode and colors, and reduced the brightness/contrast to 35/75)
It's true that I can't see the flicker above 80% brightness, but that's totally useless.
Click to expand...

I ended up returning mine and getting a different monitor. I own 3 Dell UltraSharps, but the AG coating on their current panels was too much for me.

The "flicker" you describe is what I thought was bothering me too. I found it was the AG coating that made it appear to flicker. Perhaps a better way to describe it is that reading text seemed to have a "sparkle" effect which really bothered my eyes. I can't remember what article I pulled up, but it offered an explanation as to why the LG AG coating causes this. I'll see if I can find it and post the link.

If it doesn't bother you, then it's a great monitor. My eyes just couldn't handle it. For gaming it was fine.
 
Same experience as footballcoach (in fact I think I replied on his thread about the issue, if I recall right).

Had the same 'sparkle' issue. It's weird how it bothers some people and not others. For instance, my 9 year old nephew looked at my monitor one day, and commented how the screen was all 'sparkly'. Yet I've had others look at it and say they couldn't notice anything out of the ordinary.

I eventually returned mine. Ended up instead with a 21" NEC CRT, which strangely (and depressingly, depending on how you view current monitor technology) has a better overall picture than the 2412 had. Not as sharp, but overall colors, angles and black/white much better.
 
computerpro3 said:
I just got mine and finished calibrating it and have the opposite opinion. It is a clear night and day upgrade from my (decent and calibrated) TN. I used my i1 LT to calibrate it and the results are just absolutely perfect. It really makes my TN look bad.
Click to expand...

The thing is, I want to have that feeling, I just dont know what the easiest program to use is to accomplish this, and completely forget which program I was using when I calibrated my TV.

Thanks for the suggestion to a poster above me, I might try that.
 
Tumdace said:
The thing is, I want to have that feeling, I just dont know what the easiest program to use is to accomplish this, and completely forget which program I was using when I calibrated my TV.

Thanks for the suggestion to a poster above me, I might try that.
Click to expand...

Well, Color HCFR is what I used and it's free. That should nail down the RGB settings for greyscale. Then make an ICC profile using one of many available programs and you're golden.

Actually, I find that hardforums is actually an easy place to notice a huge difference. The grey backgrounds of the post make an excellent test of how your colors are dialed in. The clearly delineated pure grey from the black background remains constant no matter the viewing angle. And there are no red overtones like there was in my calibrated TN - just nice grey.
 
nalc said:
I used ColorHCFR to dial in the individual R,G,B channels for a D65 whitepoint, and the 14-day trial of basiccolor to build an ICC profile.
Click to expand...

IVe seen places to download ICC Profiles, how do I use an ICC profile if I just download one?
 
Ok so ive got the program all set up and stuff, but.. I need test patterns (following this guide: http://www.curtpalme.com/forum/viewtopic.php?t=10457). I have the DVE Blu ray disc, but theres no simple way to play the blu ray on a PC, so I would need to hook up my PS3 to this monitor.. but theres no HDMI...

Such a pain.. how do you guys calibrate with that program? Is there test patterns I can download online? The DVE HD Basics is how I calibrated my plasma, but it was easy to do because I ran it off my PS3 into my tv and then used my PC to run the calibration, but cant do that this way..

Any help? Any simple guides? I dont want to jump through loops and hoops just to get blu rays playing on my PC (VLC should have had support for blu ray years ago...).
 
@poindexter - tried setting brightness to 100% and lowering RGB values to about 60, and this is a very good workaround for the flicker, though I don't know what it does to colors cause I don't have a calibrator. The only problem is that the blb is getting obvious at this brightness point - lower right corner of my screen is now two shades lighter than the rest :(
Still looks like I'll try my luck with a SA850. When it becomes available in this dump, that is...
 
Tumdace said:
Ok so ive got the program all set up and stuff, but.. I need test patterns (following this guide: http://www.curtpalme.com/forum/viewtopic.php?t=10457). I have the DVE Blu ray disc, but theres no simple way to play the blu ray on a PC, so I would need to hook up my PS3 to this monitor.. but theres no HDMI...

Such a pain.. how do you guys calibrate with that program? Is there test patterns I can download online? The DVE HD Basics is how I calibrated my plasma, but it was easy to do because I ran it off my PS3 into my tv and then used my PC to run the calibration, but cant do that this way..

Any help? Any simple guides? I dont want to jump through loops and hoops just to get blu rays playing on my PC (VLC should have had support for blu ray years ago...).
Click to expand...

For ColorHFCR, just select "View Images". It has all the test patterns built in.
 
Got mine and setup following 10e's settings. Very happy upgrading from my 2209WA!
 
Ok so with my calibrated settings, Ive got:

45 Brightness
65 Contrast
R 99
G 88
B 93

However, it still seems like its darker, not as bright/vivid. Obviously because my brightness is down to 45, but I wanted my RGB levels to be as close to 100% each as possible, and my greyscale to be accurate, and thats what I was taken down to. Probably could slide up to 50 brightness and still be fine.

What settings have some other people used? Where is the post that shows what settings 10e used?
 
Got mine today. A02 Jan 2012 from China. Pretty decent, though my WPF2007 seems to have better color.
 
Tumdace said:
Ok so with my calibrated settings, Ive got:

45 Brightness
65 Contrast
R 99
G 88
B 93

However, it still seems like its darker, not as bright/vivid. Obviously because my brightness is down to 45, but I wanted my RGB levels to be as close to 100% each as possible, and my greyscale to be accurate, and thats what I was taken down to. Probably could slide up to 50 brightness and still be fine.

What settings have some other people used? Where is the post that shows what settings 10e used?
Click to expand...

I think your contrast is too low. I use:

R 91
G 82
B 100

Brightness: 35
Contrast: 100

That gives me delta e's under 1 for 30-80, 40 ftl brightness, 6500k white point, and perfectly flat gamma.
 
10e said:
K33B said:
Preset > Custom Color with Red>96, Green>93, and Blue>87 @ brightness of 45 and contrast of 75.

Yep.

I may suggest different once my new I1D3 is fully supported with BasicColor or Lacie Blue Eye Pro. It's supposed to handle W-LED better than the I1D2 did. Hopefully soon.
Click to expand...

Oh man, put these settings in... forget about it. Looks so much better than my "calibrated" settings. Thanks 10e!
Click to expand...
 
I had 5 of these at one point and none of them calibrated to the same RGB levels. Most everyone has probably noticed that one tick down on the red slider is a vast difference, not sure why, but I noticed that on all 5. Bottom line, you really can't expect to use another panels RGB settings and expect to have great color. Ideally, a colorimeter will not only help you set the RGB, but it will create a LUT that will compensate for other variations from 0 to 100% on each color value.
 
Well i used my eyeone calibrator, but it didnt look near as good as just using 10e's settings.

I mean, unless I am seriously screwing up the calibration..

Like is there a quick and dirty guide on calibrating with HCFR?
 
If you want a quick and foolproof result to get very close, just use xrite's imatch software from their website. I wanted to see the difference between manually calibrating with hcfr and with doing it with the software, so I tried both then measured the results. iMatch got me under 2.7 delta e's for everything, with most under 1.5. That will also take care of creating an ICC profile for you.
 
Disregard my previous settings, I didn't realize I had accidentally changed the color mode.

This is the result of a calibration using xrite's iMatch software, confirmed with color HCFR:

rgbb.jpg


luminanceb.jpg


gamman.jpg


colortemps.jpg


ciev.jpg


Pretty damn good. My settings on the panel were:

Red: 100
Green: 92
Blue: 99

Contrast: 75
Brightness: 35
 
So how do you test in HCFR? What test patterns do you use when it asks for IRE 10, 20, 30 etc?

I dont see those test patterns anywhere in HCFR.
 
nahero said:
@poindexter - tried setting brightness to 100% and lowering RGB values to about 60, and this is a very good workaround for the flicker, though I don't know what it does to colors cause I don't have a calibrator. The only problem is that the blb is getting obvious at this brightness point - lower right corner of my screen is now two shades lighter than the rest :(
Still looks like I'll try my luck with a SA850. When it becomes available in this dump, that is...
Click to expand...

I don't see BLB on my unit, but in general I think this workaround is unsatisfactory. Contrast suffers, colours look dull. Sadly, I'll be returning my 2412.

Would be very interested to hear about your experience with the SA850 when you get it!
 
Yes, after playing a bit with this workaround, there are too much downsides - it's ok for web and text work, but graphics and movies look bad.

About the SA850 - yeah, you could grow very old till the time I get it, I live in Croatia, and it's nowhere in sight :p
 
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