I suspected using that term would get me in trouble :-) It is probably better to think of these profiles as 'profiles that refer to standard color spaces'  -- NOT standard profiles. When I used the term "standard" profiles I meant profiles that pertain to standard color encodings. E.g., sRGB is a particular standard RGB encoding spec'd in IEC 61966-2-1. A profile built to color convert that color encoding to/from ICC PCS  +   that also adheres to the ICC profile specification - can be loosely called a "standard profile" but is still better thought of as a profile FOR a standard color space.   The ICC is working on posting some such profiles for the common RGB color spaces and the CMYK color spaces that are defined in the ISO printing standards. The Adobe RGB profile is there now. [Perhaps open source systems can avoid distribution licensing problems by not bundling the Adobe RGB profile but rather referring users to that website.]     www.eci.org has some of such profiles as well. So the short answer is - a color space encoding is determined to be standard when it is specified in an ISO or IEC standard, or is in wide use in public domain [Adobe RGB]. Then a profile that is correctly built for that color space - can loosely be called a standard profile.   Complicating caveat: note that profiles contain more than one color conversion path. The two major paths in all ICC profiles are 'perceptual rendering' and 'colorimetric conversion'.  Any profile that contains a CLUT structure element in the perceptual rendering path will have proprietary behavior in that path. So those profiles give standard behavior only when used in a color matching - colorimetric conversion operation. Best regards, Ann McCarthy Lexmark CPD Imaging Systems Engineering "To every complex problem there is a simple solution - and inevitably it is wrong"   HL Mencken <table width=100%> <tr valign=top> <td> <td>Sven Neumann <sven@gimp.org> 07/06/2006 06:18 PM <td>                To:        almccart@lexmark.com         cc:        Hubert Figuiere <hfiguiere@teaser.fr>, OpenICC Liste <openicc@lists.freedesktop.org>, openicc-bounces@lists.freedesktop.org         Subject:        Re: [Openicc] Open Source compatible AdobeRGB profile</table> Hi, On Thu, 2006-07-06 at 17:02 -0400, almccart@lexmark.com wrote: > b. Provide for retrieval of standard profiles [actual std and defacto > std] to be used when content files > use the color space label approach. [e.g., profiles provided through > links on the ICC website: www.color.org] Who defines what a standard profile is and what label to use for it? > My apologies if this is review for most of you.  It seemed from some > comments that a background   > statement might be helpful. > Thanks for the summary. Sven