Posted: Thu Mar 19, 2009 6:20 am Post subject: Need help, I got Embedded Profile Mismatch warning
I used photoshop to open a JPG file and I got this warning dialog box message:
================================================
The document "xxx" has an embedded color profile that does not match the current RGB working space.
Then I was offered by 3 options in the dialog box:
1. Use the embedded profile (instead of the working space).
2. Convert document's color to working space.
3. Discard the embedded profile (don't color manage).
The questions:
a. What should I choose between the three options?
b. What is the functionality of the embedded Profile?
c. Is Embedded Profile equal to ICC profile?
Joined: 24 Sep 2007
Posts: 3515
Location: Haverhill, UK PS Version: Lightroom 5, CS4 & Elements 11 OS: Windows 8.1
Posted: Sat Mar 21, 2009 4:50 pm Post subject:
mrribbit wrote:
a. What should I choose between the three options?
I think that will depend on how you're wanting to output the image (screen, print etc). I'm not familiar with the Kodak profile but it sounds like the original profile, ie the one that belongs to the camera. I tend to work with Adobe RGB when I'm concerned about profiles, but if I were in your situation I'd convert to the working space as the SRGB is a good multi-purpose profile.
mrribbit wrote:
b. What is the functionality of the embedded Profile?
As said, it it the colour space the image was created or last edited in.
mrribbit wrote:
c. Is Embedded Profile equal to ICC profile?
Yes the embedded profile is a type of ICC profile.
I think that will depend on how you're wanting to output the image (screen, print etc). I'm not familiar with the Kodak profile but it sounds like the original profile, ie the one that belongs to the camera. I tend to work with Adobe RGB when I'm concerned about profiles, but if I were in your situation I'd convert to the working space as the SRGB is a good multi-purpose profile.
What's the benefit if I convert it to Adobe RGB/sRGB? Give me a reason why I must convert the Kodak profile to Adobe RGB/sRGB profile?
Another question:
I heard about these two command menus: "Assign Profile ..." and "Convert to Profile ...". Is that the command that used to assign/change/discarde profile from an image?
What's the difference between "Assign Profile ..." and "Convert to Profile ..."? Which one that I should use?
Just give me a quick answer, what usually you do if you face this situation:
Joined: 24 Sep 2007
Posts: 3515
Location: Haverhill, UK PS Version: Lightroom 5, CS4 & Elements 11 OS: Windows 8.1
Posted: Mon Mar 23, 2009 7:37 am Post subject:
mrribbit wrote:
What's the benefit if I convert it to Adobe RGB/sRGB? Give me a reason why I must convert the Kodak profile to Adobe RGB/sRGB profile?
Basically all 3 profiles will have a different gamut of colours available. Since they are all 8 bit RGB profiles they will have the same amount of colours but a different range of colours.
mrribbit wrote:
I heard about these two command menus: "Assign Profile ..." and "Convert to Profile ...". Is that the command that used to assign/change/discarde profile from an image?
Yes it is.
mrribbit wrote:
What's the difference between "Assign Profile ..." and "Convert to Profile ..."? Which one that I should use?
Convert to profile means to permenantly change the profile of the image ie from SRGB to Adobe RGB. Assign profile is to interpret the original profile into the colour values of the assigned profile without making any permenant changes. Ideal if you want the image to remain in the original colour space but you want to edit it in Photoshop using a different colour space.
mrribbit wrote:
Just give me a quick answer, what usually you do if you face this situation:
There really isn't a quick answer if you want the information to be of any value to your photo collection and editing work. Generally speaking, I guess more often that not, I'd assign working RGB, and then convert to it, but it really would depend on how you're going to output it. _________________ Matt
3photoshop.com
http://www.3photoshop.com
Assign profile is to interpret the original profile into the colour values of the assigned profile without making any permenant changes. Ideal if you want the image to remain in the original colour space but you want to edit it in Photoshop using a different colour space.
What I've seen is the otherwise. If I do an assignment (ie, Adobe RGB) to a no-profile image, the image color in the working space is changed. But if I do a conversion to Adobe RGB to same no-profile image, the image color in working space is not changed (note: My current working space's RGB is sRGB IEC61966-2.1).
Also, I found an interesting issue that there are different color interpretations in an image between image viewer, like AcdSee 3, MS Paint, Windows Picture viewer, some browsers, and the photoshop itself. Let's say I have 3 images:
#1. Original Image (no embedded profile). This is image of a green frog.
#2. Original Image that has been assigned with Adobe RGB profile, then saved with embedded Adobe RGB profile.
#3. Original Image that has been converted to Adobe RGB profile, then saved with embedded Adobe RGB profile.
Note: My current working space's RGB is sRGB IEC61966-2.1. In color settings, I choose "Web Graphics Defaults".
I only observed the green color of the frog's body.
This is the green color showed when the images are viewed in AcdSee 3, MS Paint, and Browsers (Firefox 3 & Opera 9):
Image #1: Original green.
Image #2: The green is equal to image #1's green, that means we can say that image #1 and #2 are look alike.
Image #3: The green is lighter than the original.
This is the green color showed when the images are viewed in Windows Picture Viewer and Photoshop 7:
Image #1: Original green. Look same with what look like in AcdSee 3 too.
Image #2: The green is darker than the original.
Image #3: The green is equal to image #1's green, that means we can say that image #1 and #3 are look alike.
Could you explain why there are different color interpretations in applications? What caused this? Which is the right one?
Is there a way to know what's the profile inside an image if I set the Color Management Policies to "Off"?
Joined: 24 Sep 2007
Posts: 3515
Location: Haverhill, UK PS Version: Lightroom 5, CS4 & Elements 11 OS: Windows 8.1
Posted: Wed Mar 25, 2009 2:47 pm Post subject:
I'd say it goes something like this-
mrribbit wrote:
This is the green color showed when the images are viewed in AcdSee 3, MS Paint, and Browsers (Firefox 3 & Opera 9):
Image #1: Original green.
Image #2: The green is equal to image #1's green, that means we can say that image #1 and #2 are look alike.
Image #3: The green is lighter than the original.
Assign to profile just tags the image with the new profile, so no permenent changes are made. When you view it in a browser etc, because there is no colour management, all assigned changed get ignored. When converting the image to a different profile, Photoshop does it's best to match the original colours to the new profile, it never gets it exactly right but it tries its best.
mrribbit wrote:
This is the green color showed when the images are viewed in Windows Picture Viewer and Photoshop 7:
Image #1: Original green. Look same with what look like in AcdSee 3 too.
Image #2: The green is darker than the original.
Image #3: The green is equal to image #1's green, that means we can say that image #1 and #3 are look alike.
When you assign a profile and view it in Photoshop, you're trying to view the original image using new colour values (ie colours defined by a temporarily assigned profile). When you convert, you're trying to retain the appearance of the colours by matching them as closely as possible to the new ones, so there's a minimal colour shift.
Confusing I know, not sure I've helped much with that explanation but hopefully it will hopefully answer some questions.
In the meantime, you've got me interested so if you want to continue, feel free to send me the images by email! _________________ Matt
3photoshop.com
http://www.3photoshop.com
You haven't answer this question:
Is there a way to know what's the profile inside an image if I set the Color Management Policies to "Off" in photoshop?
Quote:
In the meantime, you've got me interested so if you want to continue, feel free to send me the images by email
Actually you can try it by yourself with any image, but anyway here are the three frog images:
#1. Original image:
#2. Original Image that has been assigned with Adobe RGB profile:
#3. Original Image that has been converted to Adobe RGB profile:
So, which one has the right color showed between AcdSee/Browsers or Photoshop?
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum
