Diego Carra wrote: Hi, > But should I read this patches in -e mode or -t mode? It depends on how you will use them. If the backlight you are using is the one that will be used to view the prints, then use -e. If the backlight is just for measurement, then use -t and then choose an appropriate illuminant (ie. one characteristic of what will be used to view the print) when making the profile. > And perhaps Have I to create paches with the filmtarg command? No - filmtarg is for motion picture film targets. Graeme Gill.