sRGB vs. sRGB IEC61966-2.1

I've seen places where I'm supposed to "embed" the
profile in my image for Costco, etc. and others where
I'm not. By "embed" does one actually mean "apply?"
Because using Aperture, I just took a RAW image,
exported it to my desktop using a Costco printer
profile, and viewing the image shows a "ColorSpace"
of "RGB."

No they are different.
PS allows for either.
When you embed the information, that information becomes a permenant part of the file information and is available at the time of "save as".

BUT

To embed, you must first apply!
So you can apply a profile to your file; print or whatever and then close the file without saving or when saving choose to ignore or embed the profile.

AJM

Eduardo

Thanks for the information. I should have been a little more specific.

When I was using Photoshop in Mac OS X Panther there was a red color cast. This was resolved by switching the OS Display Preferences from color LCD to sRGB IEC61966-2.1

This didn't change the color of the screen, only the cast in Photoshop, so I left the setting there. I don't know why this worked.

This approach however did not work for a color cast in Photoshop installed on Tiger. Switching Display Preferences here changed the color of the whole screen.

I tried to get this resolved through Apple tech support. They had me archive and install Tiger and reinstall Photoshop, but same color cast was still there in both Photoshop and Adobe Bridge. Because of this I'm using Panther.

I'm going to also try the Adobe forum and see what I can find there.

http://www.adobeforums.com/

Photoscene



PowerBook G4 17 inch, PowerBook G4 12 inch Mac OS X (10.4.6) Tiger/Panther

Someone will no doubt correct me if Im wrong, however, I believe Aperture actually uses the ProPhoto colour space internally and isnt selectable. The only varience you then have on that is what space to 'proof', 'export' and 'print' to.

AdobeRGB98 is useless unless you are working in colour managed applications / environments since most things are calibrated (or have an approximately similar gamut to) for sRGB. In fact, Safari is the only browser I am aware of that does colour management, the rest all use the OS default colour space (ie sRGB).

http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00993n
has a graph covering the sRGB and AdbobeRGB colour spaces against a couple of Fuji Frontiers. If you believe this plot, then neither colourspace fully covers the gamut avaiable on the Frontier. Thus you are better off using a profile specific for the Frontier if available. If not, then AdobeRGB will lack saturation (just like on the web) due to lack of colour management on the Frontier.

By the way, as far as I can verify, the colorspace you set on the camera really only matters when shooting JPEG. A RAW file isnt at the point where a colourspace means anything to it, it still has to be processed and then have a colourspace set against it.

I havent tested what the situation is with regards to what happens with regards to profiles assigned during ingesting to your managment app though. I THINK Nikon Capture applies a colourspace to the RAW file as per its set in the camera, but not sure about Aperture.

Hello, Photoscene 🙂

Quote: "The difference between sRGB and sRGB IEC61966-2.1 is still a mystery."

Well, maybe if someone in here would stay on topic we would all know! —


OK, sorry for the deviation. 😝

I'll start a sRGB vs. Adobe RGB thread

love & peace,
victor 🙂

My apologies for getting this thread off track.

Photoscene