color representation uncalibrated

[Allison]

I had no idea where to post this topic so I thought I'd put it in here.

Ok so starting with my title.....
That's what my exif info says in windows xp to the images that I have taken with my canon.
I was told to put my color space in camera to Adobe 1998 because it has a greater color gamut. So the images that I took in manual mode says uncalibrated when viewing on the computer. And the ones taken in portrait mode were somehow switched to srgb. That's prolly another post but for now I'm wondering why it says "uncalibrated"

Another thing I noticed was with the canon image numbers they are labeled as "IMG_####" and the ones I take in the manual modes with the adobe rgb color are named as "_MG_####".
I guess this is something I could email Canon about but I thought I was ask anyone here first.

[iCe]

Hi Allison. Colorspace is a pretty "busy" topic. There's some info here but probably not enough of what you need. The Luminous Landscape website has some very good info on colorspace too.

[Allison]

Thanks!
Well I just took a look at mt manual and it did explain that the titles change when you take pics in Adboe 1998. And it also told me that all the "basic zone settings" shoot in srgb.

Thanks for those links! I'm going to check them out right now.

[zepp]

When you open a JPEG image from a digital camera in Adobe Photoshop 7.0, the image's color profile is sRGB instead of Adobe RGB (1998) or in your case uncalibrated.

Solutions

Do one of the following:

Solution 1

Install the Ignore Exif Color Space Utilities (Windows) or the Ignore Exif Color Space plug-in (Mac OS). You can download it from Adobe's Web site at www.adobe.com/support/downloads/main.html.

Solution 2

Assign the Adobe RGB (1998) profile in Photoshop:

Note: When you assign the color profile in Photoshop, the color or lightness of the JPEG image may change. However, assigning the correct color profile enables Photoshop to represent the image's actual color data, ensuring that the printed image matches the on-screen image as closely as possible.

1. Open the JPEG image in Photoshop.

2. If the Embedded Profile Mismatch dialog box appears, choose Discard the Embedded Profile (Don't Color Manage).

3. Choose Image > Mode > Assign Profile.

4. Do one of the following:

-- If the second option in the Assign Profile dialog box is Working RGB: Adobe RGB (1998), select it.

-- If the second option in the Assign Profile dialog box is anything other than Working RGB: Adobe RGB (1998), choose Adobe RGB (1998) from the Profile pop-up menu.

5. Click OK.

Additional Information

Most digital cameras use the Exchangeable Image File (EXIF) format to store information in image files, including JPEG files. The EXIF format is limited to two color space tags--sRGB and Uncalibrated RGB. Most digital cameras attach the sRGB EXIF color space tag to JPEG files, but they don't embed a color profile in the JPEG file. Because the camera doesn't embed a profile in the JPEG file, Photoshop reads the EXIF data and opens the JPEG file into the sRGB color space.

Installing the Ignore Exif Color Space Utility (Windows) or the Ignore EXIF Color Space plug-in (Mac OS) instructs Photoshop 7.0 to ignore the color space specified in EXIF metadata. Instead, Photoshop 7.0 presents a dialog box when opening an image and asks which profile it should assign. Photoshop continues to ignore the EXIF color space setting in files unless you do the following:

-- Run Respect EXIF Color Space, which is included with the Exif Color Space Utilities (Windows)

-- Remove the plug-in and restart Photoshop (Mac OS)

For more information about color management in Photoshop, see chapters 3 and 4 of the Adobe Photoshop 7.0 User Guide.

[Allison]

Wow thank you Frank!
I did have my PSCS2 color settings in the "working space" set to srgb becuase thats all that my other camera shot in. But since my problem yesterday I switched it to adobe 1998 and the color was matched as i saw it in windows picture viewer.

Thanks for the link! I'm going to check it out.

[boxofrocks]

Originally Posted by zepp

When you open a JPEG image from a digital camera in Adobe Photoshop 7.0, the image's color profile is sRGB instead of Adobe RGB (1998) or in your case uncalibrated.

Solutions

Do one of the following:

Solution 1

Install the Ignore Exif Color Space Utilities (Windows) or the Ignore Exif Color Space plug-in (Mac OS). You can download it from Adobe's Web site at www.adobe.com/support/downloads/main.html.

Solution 2

Assign the Adobe RGB (1998) profile in Photoshop:

Note: When you assign the color profile in Photoshop, the color or lightness of the JPEG image may change. However, assigning the correct color profile enables Photoshop to represent the image's actual color data, ensuring that the printed image matches the on-screen image as closely as possible.

1. Open the JPEG image in Photoshop.

2. If the Embedded Profile Mismatch dialog box appears, choose Discard the Embedded Profile (Don't Color Manage).

3. Choose Image > Mode > Assign Profile.

4. Do one of the following:

-- If the second option in the Assign Profile dialog box is Working RGB: Adobe RGB (1998), select it.

-- If the second option in the Assign Profile dialog box is anything other than Working RGB: Adobe RGB (1998), choose Adobe RGB (1998) from the Profile pop-up menu.

5. Click OK.

Additional Information

Most digital cameras use the Exchangeable Image File (EXIF) format to store information in image files, including JPEG files. The EXIF format is limited to two color space tags--sRGB and Uncalibrated RGB. Most digital cameras attach the sRGB EXIF color space tag to JPEG files, but they don't embed a color profile in the JPEG file. Because the camera doesn't embed a profile in the JPEG file, Photoshop reads the EXIF data and opens the JPEG file into the sRGB color space.

Installing the Ignore Exif Color Space Utility (Windows) or the Ignore EXIF Color Space plug-in (Mac OS) instructs Photoshop 7.0 to ignore the color space specified in EXIF metadata. Instead, Photoshop 7.0 presents a dialog box when opening an image and asks which profile it should assign. Photoshop continues to ignore the EXIF color space setting in files unless you do the following:

-- Run Respect EXIF Color Space, which is included with the Exif Color Space Utilities (Windows)

-- Remove the plug-in and restart Photoshop (Mac OS)

For more information about color management in Photoshop, see chapters 3 and 4 of the Adobe Photoshop 7.0 User Guide.

Good info.

[JohnT]

Indeed. Thanks, Frank. Good stuff.

[TXhummer2]

ditto good info!




(where in downloads do you see it???)

[zepp]

Just remember that if you shoot in Adobe1998 and edit in photoshop in Adobe1998 unless you convert your images to SRGB for images your going to display on the web those images will be muted since web browsers are for the most part non-color compliant and are set to display images in SRGB.

[zepp]

Originally Posted by TXhummer2

(where in downloads do you see it???)

very bottom of this page listed under utilities...

http://www.adobe.com/support/downloa...atform=Windows


This condition might have been resolved in later versions of photoshop. Basically, if you shoot in Adobe1998 and edit in Adobe1998 and the colorspace is listed as uncalibrated upon opening the image in photoshop, just assign it Adobe1998....

If for some reason you shoot in Adobe1998 and edit in SRBG the convert from Adobe1998 to SRBG as your first step in photoshop.

[TXhummer2]

Thanks! (but I swear, it wasn't there before! At least now it is)