Steve, the destination profile doesn't need to know the source gamut, nor can it as you say. The conversion engine takes care of that, utilizing the info from both source and destination profile. Tyler --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "steve_bye" <steve_bye@c...> wrote: > > ----- Original Message ----- > From: "Tyler Boley" <tyler@t...> > > >Perceptual rendering is characterized by the > >nature of the two spaces involved, regardless of image content. > >For example, perceptual conversion from a large color to small color > >space will shrink gamut based on the spaces, even if there are no > >(destination) out of gamut colors in the file. > > > >Tyler > > One thing has always seemed strange tome. The printer profile's perceptual > rendering lookup table is created when the printer ICC profile is created, > but there is no knowledge at that time of what the image's source color > space will be. It seems like the proportional gamut compression that occurs > with perceptual rendering intent is not only independent of the image > content, it's independent of the size of the source color space. It's > determined before the source color space is known. > > Steve > > > > > > Please visit the Group Homepage to check the Files, and other resources as > they are often being updated. > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > If you wish to receive no emails or just a daily digest, or you wish to > unsubscribe, please edit your Membership preferences by visiting this same > page. > > Please follow these basic guidelines: > - As threads develop, trim off excess portions of earlier messages to keep > them short. > - Good manners are required at all time. No personal attacks or flames. > Hostile, aggressive or argumentative users may be removed from the > membership without notice. > - Keep your posts and threads related to the group topic of digital B&W > printing. Users who persistently make off-topic posts may be removed from > the membership. > - By posting on this forum you agree to abide by the group rules and > guidelines, and to abide by the actions and decisions of the group Owner and > Moderators. See "Group Topic, Rules and Guidelines" in the Files section: > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/ > > BY PARTICIPATING IN AND/OR POSTING MESSAGES TO THE DIGITAL BW, THE PRINT > YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE "OWNER" AND > "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE LIABLE TO YOU > FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY > DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS, > GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF THE "OWNER" AND > "MODERATORS" OF DIGITAL BW, THE PRINT YAHOO GROUP HAVE BEEN ADVISED OF THE > POSSIBILITY OF SUCH DAMAGES), RESULTING FROM: (i) THE USE OR THE INABILITY > TO USE THE DIGITAL BW, THE PRINT YAHOO GROUP; (ii) UNAUTHORIZED ACCESS TO OR > ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR CONDUCT OF ANY > THIRD PARTY ON THE DIGITAL BW, THE PRINT YAHOO GROUP; OR (iv) ANY OTHER > MATTER RELATING TO THE DIGITAL BW, THE PRINT YAHOO GROUP. > > Yahoo! Groups Links
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Re: [Digital BW] Quadtone RIP Faded print
2005-03-24 by Tyler Boley
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