2407WFP-HC or maybe 2407WFPb colour problems

Chris, thank you for a fast reply.

It says:
Source = DVI-D
Resolution = 19200x1200 @60Hz
PIP Status = Disable
Dell 2407WFP-HC

Does it mean that it really is a HC? Why is 2407WFPb written on the back-side of the monitor?

Chris, can you tell me how to solve problems with colours as I described in previous post?
In default settings (B/C-50/50, RGB-100/100/100) everything looks fine. No banding, but I find the colours too bright and too green-ish. Escpecially the white. When I reduce RGB to 74/72/70 I get the colours I like but a strong colour banding occurs. Actually banding is visible on every other setting than RGB-100/100/100. Also if contrast is not set to 50, banding occurs. Is there a way to calibrate this somehow or is it just a malfunction?
However it is not acceptable for such an expensive display.

martyfeldman,

* Press the monitor OSD Menu button
* Press minus to move to Display Settings
* Press the monitor OSD Menu button
* Press minus to move to Display Info
* Press the monitor OSD Menu button

Mine states -
Source = DVI-D
Resolution = 19200x1200 @60Hz
PIP Status = Off
Dell 2407WFP

What does yours say?

Chris,

So what does B stand for? I mean; where was it manufactured?

I've took the photo of a very bright white background with a slightly green tone in it. It doesn't show right on photo. My camera is not good enough to show it. Just to be able to compare I also included my old 19" lcd in the scene which has very pleasant white with no mixed other tones.

Here is the photo.

I understand that this 2407 has a higher contrast and brightness than my old monitor, but it is really too much. I wasn't even able to write this post in default settings. I had to turn it back down to 74/72/70. It is that bright.
I wouldn't mind this default brightness and greenish tones if it wasn't for this banding issue which occurs when I correct the RGB or contrast.

martyfeldman,

You have the 2407WFP-HC. The B is where it was manufactured. Reset the monitor to defaults and post a picture of this too bright and too greenish issue.

martyfeldman,

I can ask about the B. As to your issue, getting an exchange will not fix this. Try these settings:
* Open the OSD and go to Color Settings
* Choose the following -
PC Mode
PC Custom Color
Red: 85
Green: 85
Blue: 90
* Go to Brightness and set it to 30

As I already told you; when I change the default settings to any other value, video banding occurs.
This way (B/C-30/50, RGB-85/85/90) it just gets slightly less visible but it still very clear that banding is present. Also with this 85/85/90 setting, a blueish tone appears on white background.

This is the photo of Dell v2407 showing colour banding on 85/85/90.
This is the photo of my old MVA panel LCD monitor just to compare.

Is this really acceptable for Dell?

martyfeldman,

I do not think a replacement will fix the issue but it's your call.

If you have a service tag number associated with your monitor, you may use Technical Support Chat/E-mail support to setup the monitor exchange. If you only have an Order number associated with the monitor, you must call in, 1-800-624-9896. They will need the following information -
20 digit PPID number on back of monitor
Name, address, phone, email address
Order number
Issue
Troubleshooting done

"martyfeldman" wrote:
> On default settings it seems to me that colours are
> much too bright, and somehow greenish. Especially
> the white colour is unpleasant for my eyes because
> of its brightness.

Same here. On my new 2407WFP-HC, blacks are too dark, highlights are burnt out and too greenish. Adjusting the monitor's own contrast and brightness controls won't help. It's best to leave them at their factory settings which is 50 for both.

The solution is easy: Launch your graphics card driver's control dialog and adjust the settings there. Usually, a decent driver offers a control which has a freely adjustable monitor response curve. At default settings, the curve is just a straight line from bottom left (0.00, 0.00) to top right (1.00, 1.00).

In my case, I adjusted the curve like this: Raise the blacks, reduce the highlights, and leave the center alone---so the curve is still a straight line but at a slightly flatter slope, from (0.00, 0.04) to (1.00, 0.96). To address the greenish cast in the highlights, I switched to the green channel's curve and reduced the highlights by one additional notch, to (1.00, 0.95). It's helpful to have a grayscale displayed on the screen while playing with the adjustments.

With those adjusted settings, the monitor now will properly discriminate pure black from very dark gray, and pure white from very light gray, and will have no obvious colour cast anymore. Judged by eye-balling, the rendition of both colours and tones now is just fine.


"martyfeldman" further wrote:
> Saturation option would solve this problem in one click,
> but since I wasn't able too find such option in monitor
> menu or in driver software options, I have to reduce
> RGB manually.

It's a weird idea to buy a monitor with an exceptionally wide colour gamut (it almost matches Adobe RGB) and then to artificially restrict the gamut back to sRGB again. Of course, in a non-colour-managed environment, the wide gamut naturally will lead to over-saturated colour rendition. But who cares about the colours in windows frames, menu buttons, dialog controls, icons, and web pages? The only situation where colour rendition matters is when viewing or processing photographs and videos. And for these activities, we use colour-managed applications, don't we? Just install the proper monitor profile, and you're done. If you don't have a good ICC profile for the 2407WFP-HC, simply try Adobe RGB (1998)---that's not perfect but close. By the way, the original Dell profile that came with my monitor (file name 2407WFP.ICM) is useless; it does not really match the 2407WFP-HC. The Adobe RGB (1998) profile works better.

Lufo

Lufo, I agree with you, but in some applications (sometimes needed as background) this white color is so bright that it is very hard to work with it. I use this monitor 75% for 2D/3D CAD, and 25% for photo/video editing. So just imagine working for a few hours with a very birght white background (sometimes it is impossible to avoid it). 
It simply isn't true that only colour-managed applications matter.
I think a monitor of this price should be at least fairly balanced between colour-managed apps and non-colour-managed apps.

"martyfeldman" wrote:
> It simply isn't true that only colour-managed applications matter.

Well ... in my workflow, it is true. But it seems everybody's workflow is different so what works for me does not necessarily work for anyone else.


"martyfeldman" further wrote:
> ... in some applications (sometimes needed as background) this
> white color is so bright that it is very hard to work with it.

In many applications, you can adjust the colour schemes of their user interfaces---replace white with light gray if you can. If that's not possible then I'd tone down the rendition of the highlights in the graphics card's driver's control dialog, as discussed above. Rather than using (1.00, 0.96), you may want to go down to, say, (1.00, 0.90) or even lower. When lowering the highlights substantially then possibly you'll need to tone down the mid-tones a bit as well, in order to keep the video gamma close to your system's standard (i. e. 1.8 on Mac; 2.2 on PC). But I would stay away from restricting the colour gamut unless absolutely necessary. Whites being too bright and a wide colour gamut are two different things.

Otherwise I'd recommend to buy a cheaper monitor. Or get a monitor calibration and profiling tool.

Lufo

I beleive this issue of this bizarre green hue in the gray is a software bug in the monitor itself. I have a 2407WFP-HC at home, and I have a 2107WFP at work.

 

If you are using the DVI-D input, then go into "Color Setting", and choose "Color Adjustement->PC Red", and watch the screen turn ***green*** (it should turn reddish). Now, it's hard to come out with an explanation for this.

 

The same test on the 21" monitor at work produced a redish screen, as expected.

 

The VGA (d-sub) input doesn't seem to be suffering from that.

 

There is something abnormal going with the green component of the DVI-D input, and I find it totally unacceptable considering the price of the 2407WFP monitor.

 

Althought the problem can be remedied with some of what Lufo wrote (thanks for the info), I beleive it's a software issue and that it can't be 100% compensated for. One way or the other, it will show up somehow somewhere.

Thanks for trying to help (I assume you were responding to my post. If not, please disregard this post), but at this point, I have the color calibration pretty much as I would like to have them.

 

My post is more about the fact that there are bugs in the monitor firmware (see my previous post about the "PC Red" color option), and that might very well be responsible for the other problems people have talked about as well.

 

Operating system drivers aren't going to change that, unless they actually have the capability of upgrading the firmware inside the monitor. That would be a first. I have yet to see a firmware upgrade for a monitor, but I know they do exist. But I would not hold my breath on this one.

 

Although the LCD quality itself lives up to its reputation, the fimware bug is unaccceptable and make this monitor overall a rather poor product.

 

Regards