Here's one of the more rare (and esoteric) ones: A client prints a lot of duotones (real duotones with Black and a Pantone colour) and (tries to) proof them on a Canon CLC1000.
He generates the Duotones (say a blue one) in Photoshop and prints it as usual in PS 7 using the custom proofer profile, and get blue results, not unlike the final offset print. When he places the same duotone (saved as an EPS) in Quark he'll get purple prints. As Quark can't handle Colour management with EPS files this is sort of to be expected, BUT... Some time ago in another version of Photoshop (with unknown settings) he generated duotones as well. Now when he placed these duotones in Quark 4 they WERE blue, and the printout was very similar to the one obtained in Photoshop. When opened in Photoshop both old and new duotones look and print about the same. If both are placed in the same Quark DOC, one is blue and one is purple. Quark 5 has been set up to try and use profiles, and CMS off and what have you. Photoshop files are printed using the standard Print Space window. The client of course prefer the old style way of working (no CMS where the colour match) for Duotones, but like the accurate colour when using a printer profile. So the questions are: Exactly what factors are involved when creating a Duotone in Photoshop an a Mac running OS 9.2. ColorSync control Panel? RGB or CMYK setup? CMM? What else? Have something changed in the encoding changed between PS 6 and 7? I've tried a myriad of options in both PS and Quark, but not matter what I come up with, Quark prints all my supposedly blue files as purple, but all the clients old duotones print like they should - blue. As this happens even when you place these two files in the same Quark doc (old is blue, new is purple), it must be something in the way the duotones are created between PS 6 and PS7 that makes the difference. When both old and new are printed in PS, both look blue, and very similar... And I can't figure out what the difference is, and thus replicate the Former (blue) results on the proofer... Best Regards Thomas Holm / Pixl ApS - Photographer & Colour Management Expert - Adobe Certified Training Provider in Photoshop. - Imacon Authorized Scanner Training Facility - Remote Profiling Service (Output ICC profiles) - Seminars speaker and tutor on CM and Digital Imaging etc. - Home Page: www.pixl.dk � E-mail: th<at>pixl.dk -- =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
