FW: HP Dreamcolor Display: So far, so good.
FW: HP Dreamcolor Display: So far, so good.
- Subject: FW: HP Dreamcolor Display: So far, so good.
- From: "Page, Andrew F (IPG - Palo Alto)" <email@hidden>
- Date: Wed, 24 Sep 2008 23:51:52 +0000
- Acceptlanguage: en-US
- Thread-topic: HP Dreamcolor Display: So far, so good.
I'm one of the architects of DreamColor here at HP so let me provide a bit more information on the display. Since I work mainly in the print side of the business please take these as my observations and not the official HP stance.
Calibration & Profiling
- The recommended way to calibrate and profile the display is with the HP Advanced Profiling Solution (APS) which has an Eye-One Display2 with filters and software tuned for the display (the SW works on Mac and Windows). As I mentioned to Bob this software will update the LUTs that are in the display. You can also create custom "color modes" that you see in the on-screen display with the APS. More on that later
- A spectral device will create high quality display profiles as well, but none of the tools currently talk with the display to update the LUTs so the calibration will need to be applied somewhere else
- Existing colorimeters, like the Eye-One Display2, may not work as well as expected given the difference in the colors of the filters when compared to the display -- Please feel free to provide me your observations on this point
- Time between calibration is looking to be in the multi-hundreds of hours based on the feedback from a few color critical customers; I'd certainly be interested to hear what you learn
Color Modes
- You can select multiple color modes in the display: Full, Adobe RGB 1998, sRGB, Rec. 709 (HDTV), and a D-Cinema simulation. Selecting one of these will adjust the white point, color primary intensity, and luminance to simulate the setting. When you change color modes the operating system may or may not catch the change and reassign the ICC profiles to tools like Photoshop correctly so...
- My recommendation on this, unless you are working with tools that are not ICC managed (video tools mainly) leave the display in its native/full mode and let the applications manage the colors.
General use
As someone noted the display makes the desktop look rather vivid. Vista and the Mac OS do not appear to color manage the desktop by default so the colors get displayed incorrectly, just the same as viewing sRGB image mis-tagged as Adobe RGB. If someone here knows how to enable color management for the desktop, please let me know.
You can enable color management in Firefox by enabling the gfx.color_management.enabled flag in about:config to at least make it look a bit nicer. I'm not sure about Safari, IE or Opera.
-Andrew Page
HP Designjet Proofing
650.857.6823
-----Original Message-----
From: Robert Rock [mailto:email@hidden]
Sent: Wednesday, September 24, 2008 4:15 PM
To: Page, Andrew F (IPG - Palo Alto)
Cc: 'colorsync users lists.apple.co'
Subject: RE: HP Dreamcolor Display: So far, so good.
Andrew,
Here you go: http://www.bobrock.com/colorsync/gamut_compare2.pdf
The RED wire is the profile that shipped with the display, called "Full
Color Preset" as you requested.
The GREEN wire is my personally generated profile.
Hope that helps.
I'm at 6500 and 2.2 which is what I generally prefer and am used to. I
adjusted the white points manually in ProfileMaker, using the manual RGB
adjustments on the OSD Menu.
I did not know about the point you make regarding the Eye-One, but as soon
as the "customized" calibration package that HP/X-Rite have partnered
becomes available, I will get one. I have one on order with Rick Hatmaker at
Chromix.
Let me know if you need anything else.
Regards,
Bob Rock
-----Original Message-----
From: Page, Andrew F (IPG - Palo Alto) [mailto:email@hidden]
Sent: Wednesday, September 24, 2008 6:58 PM
To: Robert Rock
Subject: RE: HP Dreamcolor Display: So far, so good.
Hi Bob,
I'm going to ask you for something a bit unorthodox here since I don't
happen to have a lp2480 on my desk at the moment. For curiosity sake could
you re-draw your diagram and include the lp2480zx profile that ships with
the display? I've attached it here so you don't need to dig for it. Yes I
know it's generic but since the panels are factory calibrated it's not that
far off reality, at least at full brightness; if you have the brightness
turned down to something a bit more retina friendly then this might not work
-- what brightness are you working at?
I'm interested in this since the color filters that are in your eye-One
Display2 are not designed for the primaries that are in the DreamColor
display, but for the reds greens and blues of a standard display. This
difference will lead to a different color response when used on a 2480; I'm
interested to see how big a difference there is in the in "real world"
operation rather than the lab.
A spectrophotometer, like the Eye-One will not have this limitation and we
have worked with X-Rite to create a version of the Eye-One Display2 that is
designed for the lp2480, which we sell as the HP DreamColor advanced
profiling system (APS). Along with the improved filters, the APS will plug
the calibration information into the display so that when you switch modes
the display will use the new information.
Thanks.
-Andrew Page
HP Designjet Proofing
650.857.6823
-----Original Message-----
From: colorsync-users-bounces+andrew_page=email@hidden
[mailto:colorsync-users-bounces+andrew_page=email@hidden] On
Behalf Of Robert Rock
Sent: Wednesday, September 24, 2008 3:12 PM
To: 'edmund ronald'
Cc: ''colorsync-users?lists.apple.com' List'
Subject: RE: HP Dreamcolor Display: So far, so good.
Edmund,
Yes, the profile was made with X-Rite ProfileMaker 5.0.8, using Eye-one
Display2
Bob
-----Original Message-----
From: edmund ronald [mailto:email@hidden]
Sent: Wednesday, September 24, 2008 4:22 PM
To: Robert Rock
Cc: 'colorsync-users?lists.apple.com' List
Subject: Re: HP Dreamcolor Display: So far, so good.
On Wed, Sep 24, 2008 at 10:11 PM, Robert Rock <email@hidden> wrote:
> This might be of interest...I just created the following PDF image in
> ColorThink:
> http://www.bobrock.com/POTN/gamut compare.pdf
>
> ...shows a comparison of several color spaces:
> The sRGB is represent by the RED wire frame.
> My previous display, Dell 2405FPW, is represented by the GREEN frame.
> AdobeRGB is represented by the PINK or MAGENTA frame.
> And the HP Dreamcolor Display....drum roll please...is the BLUE frame!!
>
> It speaks for itself.
>
Robert -
Nice graph.
Is this a measured profile ?
Edmund
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden