I waited a long time before deciding to invest myself in a probe, saying that it was too expensive for my utiloté and finally I found that the investment is worth it. I have two screens 24 "WideGamut of different brands, pre calibrated factory as and time have changed a lot. Time to apprehend the process and in about 1 hour I could calibrate these two screens for a result at odds same rating, which is crucial when working the photo for example. I waited to see my first comment print before coming but nothing to say at calibration I had no surprise (including the monochrome prints). I recommend this indispensable tool Though costly.