Profile Prism 6.03

Congratulation! You now have a scanner calibration photo. Some important things you should keep in mind: - This CD does contain the IT 8.7/2 reference file for the calibration target charge "R181224". Select the file "R181224.txt" as reference file when using the scanner profiling software. You can always download the latest reference files from http://www.targets.coloraid.de . - Handle the targets carefully to avoid kink marks, scratches and fingerprints. Do not touch the surface. - Remove the protection sleeve of the photo before scanning. Return the test target to it's protective enclosure immediately after use. - Always protect the calibration photo from strong light. Store prints in the dark at 24蚓 (75蚌) or lower and at 30- to 50-percent relative humidity. Avoid sudden temperature changes as this can cause moisture on the photo surface. Use a dry lint free cloth to dry/clean the surface. DO NOT USE ALCOHOL or other chemicals to clean the surface of the photo. - The colors of the target will change with time. For critical work it is recommended to get a new target after 2021. You can use the target much longer for non-critical work without risking major problems but you should expect small visible faults with such an age. Note that the production date printed on the target can be much older than the important measurement date noted under CREATED in the reference file. This allows colors to stabilize before measurement and ensures there is no production fault causing increased aging. Please check out http://www.targets.coloraid.de for the latest information on your charge. - You can use the calibration photo with basically any proper ANSI IT 8.7/2 compatible software. Note that the reference file content is identical for all operating systems and the file can simply be transferred to other systems in order to get used. - Some profiling programs expect reference files with the filename extension .it8 or .q60 . In this case you can simply rename the shipped .txt reference file. The IT8.7 standard defines the content of the file, but not the filename extension. As a result there are different filename extension used for the same file content. Some older profilers do expect reference files with the .tdf filename extension. The Kodak target description file (TDF) is a binary file. You can convert the shipped IT8 file to TDF using a tool from Kodaks FTP server: ftp://ftp.kodak.com/GASTDS/Q60DATA/TDF_FILES - Users of the BasICColor profiling software having problems loading the reference file should copy the reference file into the reference files directory for Agfa targets of their BasICColor software. BasICColor may need additional an additional description file found in the Agfa directory to load the IT8 reference file. Ignore the different Agfa colors in column 20-22 of the target displayed in the BasICColor. The software will use the real colors provided in the reference file. If there are still problems, check if the used BasICColor version is compatible with the used operating system. - Check out http://www.coloraid.de for links to various scanner profiling software and other CMS tools. - The "Extras" directory does contain additional files for your target: R181224.it8 : Identical to R181224.txt. Only the filename extension was changed to .it8 as expected by some profilers. R181224W.txt : Same as the normal reference file, but measurement was done using a white instead of black backing. The IT 8.7/2 standard requires the measurement of the calibration target using a black backing. Some (especialy consumer) scanners do have a white backing. Use this special reference file if your scanner does ship with a white lid. R181224S.txt : A smaller version of the normal reference file not containing any statistical information on the target production, resulting in a smaller file. Use this reference file if your profiling software does not accept the standard reference file. Currently there seem to by only three profiling programs not able to accept the standard reference files. A fault in some versions of the Heidelberg CPS ScanOpen software do cause a crash when reading the large reference file. Agfa's ColorTune users should also use this smaller file in case the normal file is not accepted by the profiler. ColorQuartet (tested with 5.2.2 build 1) also shows an error when loading the normal file. If you still have problems loading the file into ScanOpen, ColorQuartet or Colortune contact wfaust@coloraid.de . R181224S.mrf : This is basicly a gzip compressed version of the R181224S.txt file. The use of this file is experimental and has not been tested nor is there any support. Use it on your own risk. If you run into problems use the original target you got with the profiling software. Fault.txt : Some technical info on the measurement and production of the target. See also the statistical info saved in the normal R181224.txt reference file. R181224.hist : This file is for use with the X-Rite ColorShop X program and does contain the spectral data of the target. Using the spectral data ColorShop is able to calculate a large number of color operations, display the gamut hull and more. Note that the file format only supports spectral data from 400 to 700nm. A fully functional but time limited demo version of the ColorShop X software for MacOS and Windows can be found on the X-Rite website: http://www.x-rite.com For more information on the spectral data please read below. - The spectral data files provided in the "Extras" directory are currently mainly for use by experienced users and developers. Normal users intending to profile their scanners do not need these files. The spectral data can mainly be used to calculate color data for different observers or color spaces. For instance, if you want to know the color under D65 instead of D50 light, you can use ColorShop to calculate the values. - Measurement is based on wavelengths in 3nm intervals. The 3nm data is interpolated to 10nm data according to ISO 13655:2009(E) Annex I. For batch average measured productions the spectral data available is the mean data of several targets measured. XYZ tristimulus and other color spaces calculated from the mean spectral data can differ from the mean color space values listed in the IT 8.7 reference file. Status T density informations found in the reference file are according to ANSI CGATS.5-1993. Wolf Faust - wfaust@coloraid.de