János, Tóth F. wrote: > Is there an undocumented chartread command line parameter or an > enviroment variable which forces the i1Pro2 to use it's white LED > alone to act like a device with an U.V. filter? (Is this even > possible?) Hi, The i1pro2 doesn't use a white LED - it intentionally uses an incandescent lamp, just as the i1pro does, so unless it is fitted with a UV filter, you will get UV included measurements. The pro2 has a separate UV LED, which allows better characterization of FWA/OBE. Currently I'm not making use of that in Argyll. > I tried -fM2 but chartread said it's not supported with the i1Pro2. > What am I missing? You capture the spectral readings by default in chartread, and then use -fM2 in colprof. > I found the workaround for the -fM2 in a freelist thread: manually > fixing the instrument name in the ti3 file. I don't think so. Graeme Gill.