While Huawei and OnePlus had to look for outside help with their cameras (Leica and Hasselblad, respectively), Sony already has an excellent camera division in house – the engineers that build its Alpha cameras. They worked on the Mark II flagships last year and as well as the new Xperia 1 III and 5 III. Sony pulled in optical, software and image quality engineers from the Alpha team and tasked them with developing a similar experience aimed at professionals. The video below shows three of them explaining how the Xperia camera was designed and the reasoning behind some of the...
Source: https://www.gsmarena.com/sony_alpha_engineers_explain_how_developed_the_xperia_1_iii_camera-news-48727.php