piioo is right. It creates an ICC profile for the monitor and applies it (through the video card / on board graphics) at startup. He is also right in that you'll have to calibrate your printer as well to match (can't help out here unfortunately) but I assume you have to apply that ICC profile to the printer somewhere.


I use the Spider 3 express and find it makes the monitor slightly warmer than the factor default of my Dell u2401 monitor. I don't own a printer myself but I have found that colour reproduction from prints I have had made arevery closeto what it looks like on screen.


I think some sort of hardware calibration is essential for anybody serious about their photography. The Spyder3 express is great value for money.