ISPs, color shift and other questions

Zitat

Originally posted by Dani50
The NEC website describes this as a H-IPS A-TW panel and your site as a AS-ISP panel. Could you first please explain what these terms mean.

Hey,

both of those designations mean relatively the same thing: "advanced" IPS technology with wider color gamut. I believe the names are proprietary and I don't think there's any real [quality] difference between the two.

The LD2690WUXi was definately on my short list a while back but I needed a jack of all trades, leaning towards digital imaging work, but still capable of casual gaming or DVD viewing, etc.

I think I've accomplished that with my S2231W but considering your very specific needs, the LD2690 should certainly be at the very, very top of your list

With all due respect to the keen PRAD members and staff that are doing their best to support their English forums too, you will have all the info you need, good and bad, over at [H]ard|Forum and their excellent LD2690WUXi thread.

Good luck and let us know what you end up going for

You might also want to look at the new LG 2600HP, in europe it will be avaible as an IPS model

Zitat

Originally posted by Dani50
...you advise against it because it is wide-gamut. This monitor would seem to have better colour unifirmity across the screen but I don't need an extended colour range...

Well, it wasn't my intention to confuse you but I got confused myself. However, your statement above clarifies things (I hope).

You want a monitor that can accurately render colors defined by the sRGB colorspace without depending on color-aware applications.

When I calibrate a monitor, it creates a color profile that applications like Photoshop use, but also loads a "profile" directly into the Graphic card's LUT (color lookup table). So, I believe that it should be possible to benefit from a calibrated monitor even without the use of color-aware applications.

BUT, this theory of mine only applies to non wide-gamut monitors... . So, just like I mentioned in the other thread, you don't want a wide-gamut monitor. Such a monitor does not necessairly bring you "better color uniformity", it only brings you different colors... .

Last but not least, don't bother looking for a prefectly factory-calibrated monitor because it probably doesn't exist. some monitors fare better during a review right out of the factory then others, but that's still not a guarantee that your unit will have the same exact "out of the box" accuaracy.

p.s. Don't confuse IPS LCD technology with wide-gamut. My original post above was to reinforce IPS as the correct technology for your needs, not the fact that the LCD2690 has wide-gamut capability...!

Dear Dani50,

according to my info the Eizo S2431 (24") has:

* also S-PVA panel
* no color shift problem like the S2231
* no wide gammut
* price of y-shaped grey version (at least here) is only around +€150

I have ordered the Eizo S2431WH-GY and hope to get it next Tuesday.

Zitat

Originally posted by Dani50
Is S-ISP standard-gamut? and do I need to make sure it has LUT?Dani

A wide-gamut monitor uses special CCFL lamps or LED backlighting technology. There is no change in the actual Liquid Crystal technology (afaik), directly related to gamut and only contrast and/or viewing angles, etc. The trademarks "H-IPS" and "AS-IPS" etc. represent the combination of IPS and wide-gamut backlighting.

Having said that, it may very well be that some manufacturer will offer an S-IPS panel with wide-gamut backlighting, so make sure to read the full specs of the monitor(s) you are interested in.

Btw, maybe you should have a look at the following sites for a little more in-depth background on the variuous LCD tehnologies on the market today:

LCD Resource and the "originating" thread over at AnandTech's

TFT Central (UK)

Last but not least, I consider Xbit Labs as one of the better sites reviewing Display Technology along with PRAD and BEHardware.

p.s. I'm fairly certain that all monitors have an internal LUT, just that it is 8-bit (or even 6-bit for certain cheaper TN panels...) and I cannot honestly answer your question as my own knowledge of the benefits of 10, 12-bit "internal" processing is still unclear to me...

EDIT: Here's a very good (but unverified) summary of the backlight's role in Gamut from the LCD Resource Thread (new version):

"...the range of colors an LCD can display is directly dependent on how pure the color components are. Typical backlights produce a white that yields 72% coverage of the NTSC color space standard. Newer backlights use different phosphors that can effectively cover 92-97% of the NTSC space. LED backlights, which are not yet very common in LCDs, can cover up to 114% of the same color space."