New M6500 Discussion Thread

Hi Bokeh,

Do you have before and after Calibration pictures of your M6500 Display and
External Display if yes could you post them?

Thank You,

 

I could take them I guess. They would only be accurate on a calibrated display though

One thing I did notice is the the U2410 external monitor does a better job with the color red than the 2407wfp does. The 2407 was not wide gamut, the 2408 was.

I can also say that the U2410 is capable of the same fluorescent glowing red that the M6500 is showing. I tamed the red by going into the custom settings and tweaking the gain controls.

I will get those pics for you tomorrow at the office.

 

This statement really bothers me. You have one of the best displays available on a laptop, but your not able to get the most from it. I don't see it as your fault.

I want someone from Dell to let us know how they set up the sRGB and aRGB modes. I also want to know why both of those modes are so far away from being 2.2 gamma and 6500K. In my personal opinion the preset sRGB and aRGB modes are worthless. I would be more than happy to be proven wrong on that statement.

 

Bokeh, so you telling us that you still haven't make a decent sRGB profil for the M6500 RGBLED screen using Dell sRGB mode in ControlPoint and fixing it with some colorimeter ?
You 're scaring me! I'm about to send my confirmation order.
Maybe I should take that WLED screen option, it could be even better

 

That is correct. I have only made acceptable profiles with the Color Spyder 3 Elite with the NTSC profile in Controlpoint, or no Controlpoint software installed at all.

Professional displays are most commonly calibrated to 6500 Kelvin. 6500 Kelvin is the color of the sun at noon. It is considered normal white. Warm red/orange light from an old fashioned light bulb is around 2500K. Shady pictures are more blue and are around 9300K. 6500K is neutral. 5000K is considered warm or reddish. 7300K is considered cool or blueish.

This is what I measured before:
sRGB:
11,000K @ 210 nits (full bright)
10,900K @ 150 nits (5 down)
10,500K @ 90 nits (5 up)
9,700K @ 13 nits (lowest bright)

Adobe RGB:
8,621K @ 266 (full)
8,476K @ 185 (5 down)
8,398 @ 136 (5 up)

NTSC:
7,262 @ 320 (full)
7,146 @ 222 (5 down)
6,810 @ 127.1 (5 up)

The closest I can get to 6500K without color calibration is without controlpoint installed at all.

I have to wonder - Did Dell set the sRGB and aRGB schemes to the actual RGBLED panel that they are shipping? If so, who said "this looks good". sRGB is blue as hell! Every single setting has the Macintosh standard gamma of 1.8. Nevermind that only Mac uses 1.8 while Windows and video, and everyone else use the across the board standard gamma of 2.2.

In layman's terms this means your color temperature is too skewed towards blue. Its like too much treble and not enough bass. Your gamma is incorrect for a Windows machine so everything looks too bright and washed out. Its like turning the brightness up and contrast down. At the end of the day you get a blueish washed out image.

I swear, I am one of the biggest Dell fanboys out there. They need to get their act together on the M6500 rgbled display. If I were the host of Top Gear, I would call the potential of the display monumental, but the execution of the display and its controls rubbish. My white LED backlit display on my E6500 was easier to calibrate.

Once again, I hope that Dell will prove me wrong with clear instructions or an update.

These are all my opinions and I will gladly suck it up and say I am wrong if I am wrong. I will also go back and edit all these posts when Dell fixes their profiles. Look back and the people that ordered the rgblcd. When their machine arrived, how many of them had issues with their display? I know at least 3 of us that have the same issues with reds and greens that are like looking at a lite bright.

 

I agree that Dell needs to get their act together with this display. If their calibration of the sRGB and adobeRGB presets are indeed as far off as you say, then what they are advertising for the system amounts to false advertising. "PremierColor is a color technology sub-brand from Dell which encapsulates the key attributes of color such as precise color accuracy, compatibility with industry color standard, internal color space selection as well as amazing color gamut and depth." "PremierColor-supported Dell PrecisionTM laptops come with internal color space selection ability via Dell Control Point software. Color space selection enables the users to select their desired color space such as NTSC, sRGB and Adobe based on their desired output without having to use external calibration tools."

But please, lets not mix that up with the fact that colors are too saturated when viewing in a non-color managed application. That will happen with ANY wide gamut monitor. A wide gamut display can only display accurate colors when you are working in a color-managed application such as Photoshop, and your source file is tagged with an appropriate destination color space. (I know you are aware of this Bokeh, but other folks might not be.) That's just the nature of todays technology, and not a specific shortcoming of this particular display.

 

I was actually able to get great results from the U2410 without calibration by turning the gain on the R,G,and B channels down in the custom settings. I did have to use a colorimeter to measure the output as I adjusted those channels though. I will post all of the U2410 settings tomorrow when I get to the office. I feel certain that I could get similar results from the M6500 rgbled display if I had access to those channel gain settings.

Also, don't get caught up with the marketing speak. One thing I got from my MBA was the ability to see great sounding catch phrases like "PremierColor" with the appropriate level of jaded sarcasm. PremierColor, just like UltraSharp and TrueColor before it, means nothing outside of the world of Dell. Yeah, PremierColor sounds like some kind of industry standard, but its not. Its just Dell marketing.

I am going to start digging into those 110% color gamut claims. Time to did into cie1976 and cie1931 color spaces that Dell cites.

 

I am using photoshop these days and after I finished some images and used my t60p (ips screen) to look at them, I find the colour is totally different from M6500, especially the green and blue. Before that I only realized the RGB Led screen was saturate, but now I think I got a big trouble. ATI control panel could change the gamma , brightness and contrast but I have no confident to play with that.

Bokeh, do you think your profile also suits for me? I am using ATI graphic card. Thank you!

 

Got this from Dell UK: "The factory is short on screens for this unit, which they anticipate will be there Saturday latest and then it should ship immediately after that."

This is the RGBLED screen and I guess it's the factory in Poland. I hope that screen's worth all 7 weeks I'll have waited for it... Is it?

 

I'm really thinking about changing my order to the WLED panel and let that RGBLED away if I can't get a near "perfect" complet sRGB profil I can switch in (your measure are horrible, you can't catch 6500K in the default sRGB mode). I'm going to do a lot of "webdesign" on my M6500 and need to be moving with it. I guess I will keep photo work for my CRT at home.
Does anyone having the WUXGA WLED screen calibrated it ? What did they get ?