I use PI10 to tinker with photos, but when I get them printed (I send them off) they're not exactly what I wanted. I've tried comparing the printed picture with the screen and trying to get them to match by playing with the screen settings but I've been unable to usefully match them because there are so many things to alter (what is gamma?)
Is there a simple way of doing this by using a step by step process and a calibration chart?
Stewart;
The first thing to check is your settings under Preferences-Color management. Select a profile to match your monitor and one to match the printer. This may not be possible for you unless your printer will provide you with the profile. If you don't know what profile to use for your monitor, try selecting sRGB, which is generic.
Gamma is in simplest terms, contrast. A higher value gives less contrast by increasing the brightness of the midrange values. One of the reasons for colors not matching is that the gamma curves for each of the three colors could be different. The preferred method is to use a calibration device and software to set your monitor to a standard, but this can be rather expensive. I use a free program called Gamma Panel to adjust my screen output to match printed output, and save this profile. This allows me to have quick access to that profile when I am editing pictures for print, or returning to defaults for web or other uses.