Toine wrote: >From what I learned there are two display devices normal (sRGB) and >wide gamut. My monitor is a wide gamut device. If you load the (Dell) >profile for the device Windows is wide gamut enabled. The same goes >for loading the AdobeRGB profile. >Once I load a wide gamut profile the Chrome browser is displaying two >versions of a sRGB jpg. >Apparently you need a colorimeter to calibrate sRGB and a >spectrophotometer to calibrate wide gamut. I don't understand the >difference (yet). > >I set everything to sRGB and disabled wide gamut. Now I see two >identical renderings in Chrome and identical renderings across LR, all >other browser and ipad/iphone.
I think you really need to read a good book on color management first. Try Real World Color Management by Bruce Fraser, et. al. (ISBN 978-0321267221) That said, here's some information: A colorimeter measures only red, green, and blue colors of light (and calculates color from the ratios), while a spectrophotometer can measure the intensity of any wavelength of visible light. Either one can be used for monitor profiling and the advantages/disadvantages of each aren't relevant to your application: Either should work for you. A colorimeter will be more affordable. It sounds as if your monitor can be set to perform as either an sRGB device or wide-gamut device. Whichever way you set it, you can use either the manufacturer's supplied profiles or generate your own (with software and a colorimeter). If you're using a fully color managed workflow it shouldn't matter which you choose: when you soft-proof you should be shown a fairly good representation of what your output device is going to produce. If you're converting images to sRGB for the web (and you should be) then they should render properly no matter whether your monitor is set to sRGB or wide gamut as long as you have the appropriate profile loaded. Perhaps earlier you had your monitor set to wide gamut but had the wide gamut profile loaded (or vice-versa)? -- Mark Roberts - Photography & Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
