Huawei and Leica put a lot of effort into building a unique camera. On paper, the Huawei P20 Pro camera should be the best on the market, though that paper may be tough to understand. So, let us quickly guide you through the three cameras of the Pro. The 40 MP camera is the major selling point. It features a huge 1/1.7" sensor, considerably larger than any current phone. You're probably thinking that this means small pixels and it does, but it's not quite so simple. The sensor features something called a Quad Bayer filter, but we should probably explain what a Bayer filter is in the...
Source: https://www.gsmarena.com/explaining_huawei_p20_pros_triple_camera-news-30497.php
