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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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Re: filmscanners: Does CMM work on Win2000?



Yes - Adobe RGB is a wider color space than is sRGB, and Photoshop therefore
~stretches~ out the viewable colors to accord with that wider color space.

By converting to sRGB you told Photoshop to compress the colors into the
sRGB color space, that physically viewable by the monitor, and you saw the
colors brightened.

Maris

----- Original Message -----
From: "Gordon Tassi" <gtassi@erols.com>
To: <filmscanners@halftone.co.uk>
Sent: Tuesday, June 26, 2001 6:10 PM
Subject: Re: filmscanners: Does CMM work on Win2000?


| Sorry to post so late on this.  I had a similar problem.   I had saved a
| Vuescan  tiff image of a sunset in Adobe RGB onto a disk.     When I
opened it
| in Adobe 6.0, I told the program not to convert it and the the colors were
| flat.  When I reopened it and told the program to convert it to sRGB and
colors
| were restored.
|
| Gordon
|
| Gordon
|
| "Maris V. Lidaka, Sr." wrote:
|
| > I think that's the rub - Windows is not Photoshop.  Windows ignores the
| > embedded profile - Windows does sRGB so Windows makes it sRGB and
ignores
| > the tag.  Windows does not do gamut mapping to my knowledge.
| >
| > Maris
| >
| > ----- Original Message -----
| > From: "Ramesh Kumar_C" <RKumar_C@zaplet.com>
| > To: <filmscanners@halftone.co.uk>
| > Sent: Tuesday, June 26, 2001 11:32 AM
| > Subject: RE: filmscanners: Does CMM work on Win2000?
| >
| > | Hi Maris
| > |  Thanks for responding.
| > |
| > | >>Windows interprets your embedded profile as an sRGB image and
adjusts
| > the
| > | >>colors accordingly.
| > |   But my image is tagged as ProPhotoRGB. I think, before interpreting
as
| > | sRGB,
| > |   windows is supposed to do some gamut mapping from ProPhotoRGB to
sRGB.
| > |
| > |
| > | Thanks
| > | Ramesh
| > | -----Original Message-----
| > | From: Maris V. Lidaka, Sr. [mailto:mlidaka@ameritech.net]
| > | Sent: Monday, June 25, 2001 5:48 PM
| > | To: filmscanners@halftone.co.uk
| > | Subject: Re: filmscanners: Does CMM work on Win2000?
| > |
| > |
| > | I use Windows 98SE so I'm not sure what the settings would be in
Win2000,
| > | but it depends on your Windows "Display" settings.  The default
Windows
| > | color space setting is sRGB, so that would explain why your wallpaper
| > looks
| > | the same as Windows wallpaper and in AcdSee as (I assume) AcdSee is
using
| > | the Windows default as it's color space as well.
| > |
| > | Windows interprets your embedded profile as an sRGB image and adjusts
the
| > | colors accordingly.
| > |
| > | You will have to change your Windows "Display" setting (in Win98SE
it's
| > | "Control Panel-Display-Settings-Advanced-Color Management") if you
want to
| > | modify this.
| > |
| > | Maris
| > |
| > | ----- Original Message -----
| > | From: "Ramesh Kumar_C" <RKumar_C@zaplet.com>
| > | To: <filmscanners@halftone.co.uk>
| > | Sent: Monday, June 25, 2001 3:22 PM
| > | Subject: filmscanners: Does CMM work on Win2000?
| > |
| > |
| > | | Hi
| > | |       I know this questioon has been asked in this list for N'number
of
| > | | times, but I am forced to ask again.
| > | |
| > | | I scanned the negative in VS, using "ProPhoto" as colour space.
Scanned
| > | | output had profile embedded in it.
| > | | I edited this image in Adobe PS6.0 and saved on to disk. I set this
| > image
| > | as
| > | | wallpaper of my desktop and also opened this image in AcdSee viewer.
| > | | Now comes the problem, the image shown in AcdSee & wallpaper does
NOT
| > | match
| > | | with the image shown in Adobe PS6.0.
| > | |
| > | | To be specific the image shown as wall paper  and image shown in
AcdSee
| > | | viewer are slightly less saturated compared to the one shown in
Adobe
| > | PS6.0.
| > | | Image shown as wall paper  and image shown in AcdSee viewer match
well.
| > | |
| > | |
| > | |
| > | | My PS6.0 setting:
| > | |  Working space: Adobe1998 (This does not matter though)
| > | |  Using embedded profile while editing the image.
| > | |
| > | |
| > | | Operating System:
| > | |  Win2000 Sp2.
| > | |
| > | |
| > | | I do not know why the 3 images are NOT matching. If the operating
system
| > | is
| > | | following CMM then 3 images should match.
| > | |
| > | | I have calibrated my monitor using "AdobeGamma", but I think this
should
| > | not
| > | | matter if the image is being viewed on same desktop.
| > | |
| > | | Please let me  know why all the 3 images are NOT matching.
| > | |
| > | |
| > | | I did another experiment, In Adobe PS6.0, I converted image to sRGB
and
| > | | saved. I set this image as wallpaper of my desktop and opened this
image
| > | in
| > | | AcdSee viewer. Now all the 3 images matched perfectly.
| > | |
| > | | Does this mean, Win2000 assumes that image is in sRGB?
| > | |
| > | | Please throw some light on this issue, feel free to ask for more
| > | information
| > | | about the scenario.
| > | |
| > | |
| > | |
| > | | Thanks
| > | | Ramesh
| > | |
| > |
|
|




 




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