I work quite a lot of photos on your PC. What good is it if the colors are painstakingly optimized and the screen "something" indicates? Calibration is needed. The installation is not a problem, but the accompanying software allows could be something catchy (for me as a layman), and requires a bit of trial and error (hence only 4 *), until you find the correct settings for calibration. The measurement itself runs then determined through dialogues. At the end you can get a monitor color profile speicherm, which is activated at each start-up (even if the Spyder hardware is kept dust-proof). There are further options as recalibration, but I do not use (so far).