Looks like it's OnePlus 5 all over again. If you remember the advertised 2x zoom on the OnePlus 5 that was achieved with an actual 1.6x optical zoom and the rest of the 0.4x zoom was delivered by the so-called SmartCapture multi-frame technology. Well, it appears that the OnePlus 7 Pro has a similar trick up its sleeve. An in-depth Android Police investigation reveals that OnePlus 7 Pro's telephoto camera doesn't have 3x optical zoom but instead something in the ballpark of 2.2x while the remaining 0.8x is achieved by cropping. No digital zoom has been used, however, so that's why there's...
Source: https://www.gsmarena.com/technically_the_oneplus_7_pros_telephoto_cam_doesnt_have_3x_optical_zoom-news-37211.php
