On 13 Mar 2005 at 16:13, William Robb wrote: > I am sure you have a good colour sense, but I have spent 30 years of > my life working in various levels of the lab industry, doing > everything from the quick and dirty photofininishing that I do now to > custom colour work for advertising. > At one time, Kodak offered me a very good income to move to Rochester > and work in their quality control division. This was after I did > their colour acuity tests and it turns out I have (had, anyway) > perfect colour observation, and the finest colour delineation skills > they had been able to benchmark. > For me, Adobe Gamma works just fine.
Sorry to be so sarcastic, it may it work for you and your particular advertising clients but regardless it only allows anyone to set/check gamma at one point in the curve. This type of adjustment assumes that the colour channels remain linear for the transfer curve, few monitors are that good even when coupled to a very linear video card. Also the colour temp can only be set very roughly in this type of visual feedback system. A good calibration system will step through the colour channels and build a transfer curve for each to ensure linearity through the full brightness range of the system, right into the shadows so there aren't any nasty colour shifts. Also calibration lets the users set an absolute dark and bright luminance, which is important if you are using your monitor as a reference to outside printing/scanning etc. Even the vanilla sRGB profile has a recommended luminance level. http://www.w3.org/Graphics/Color/sRGB My colour sense has improved markedly since I fully implemented colour calibration and control on my process and equipment. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
