Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!rutgers!mit-eddie!necntc!adelie!munsell!klm From: klm@munsell.UUCP Newsgroups: sci.physics,comp.graphics,comp.sys.ibm.pc Subject: Re: Color questions Message-ID: <1079@knopfler.munsell.UUCP> Date: Wed, 17-Jun-87 21:36:24 EDT Article-I.D.: knopfler.1079 Posted: Wed Jun 17 21:36:24 1987 Date-Received: Sat, 20-Jun-87 00:36:36 EDT References: <307@msunix.UUCP> <153@mergvax.UUCP> Reply-To: klm@munsell.UUCP (Kevin McBride) Organization: Eikonix Corp., Bedford, MA Lines: 46 Xref: utgpu sci.physics:1596 comp.graphics:740 comp.sys.ibm.pc:4263 In article <153@mergvax.UUCP> tkxyv@mergvax.UUCP (William Klein) writes: > >Forget electronic (screen) proofing: you can't get color anywhere >close (to a graphics arts person) on the screen to what the ink will look >like. I beg your pardon? Our customers seem to be very pleased with what we've done. It took a lot of color science, brain smoke, and patience, but we're very proud of what we've accomplished. >You can't even print proofs that look close enough for many customers >without actually printing the proofs on the same press, using the same ink >and paper as will be used on final output. Sure you can. I think we're the only ones who have figured out HOW, or who have bothered to do it, but it can be done. >Some customers even have a >'standard' light which will illuminate the proof with a known set of >frequencies for the color evaluation. (A printed color photo will look >quite different under tungsten light, flourescent, 'warm' flourescent, >and daylight conditions). With all of these variables, most of what the >video pre-proofing is used for is cropping, some editing, perhaps some >drawing (esp in ad layout) and the like. No color adjustment. The main selling point of our CEPS is that you *can* do color correction on the screen, and that while on many analog scanners (Hell, Crosfield, et al.) you have to adjust, proof, adjust, proof, adjust... we put a little more effort into the color science aspect of it instead of just the mechanics and we came up with a system that, when properly calibrated, produces a video proof that is nearly indistinguishable from a hardcopy proof. This is assuming of course that both are viewed under proper lighting conditions. Plus, we allow the customer the freedom of modifying the calibration tables to suit his own taste, so HE/SHE can get the results that look good to HIM/HER. Unfortunately we still have the big problem that while color can be described very accurately by science, human color perception is still a very much subjective thing, and we all know from experience that sometimes there's just no accounting for a person's taste. Stay tuned for more. The fun is just beginning. -- Kevin McBride |Disclaimer: These | harvard -\ Eikonix - A Kodak Co. | opinions are mine, | ll-xn ---adelie-----> munsell!klm 23 Crosby Dr. | not my employer's, | decvax -v talcott -v | Bedford, MA 01730 | So There! | allegra ------------encore