Purchased on Amazon promotion, this probe is then an excellent value. The colors after calibration of my monitor have become much more loyal and the ambient light sensor (which I thought a little gadget at first) is actually very useful and effective. The calibration program is well made but requests to read the manual or at least some tutorials on the internet to the full use and understand the various settings available. Warning in my case Dell monitors, it is in principle send them contrast or brightness directly without instructions to do by hand, in practice it does not work well for some models it is better do the operation manually ( U2711 particular). Indispensable for those wanting to avoid bad surprise by printing or retouching photos.
