The OnePlus 7 Pro may feature the most impressive camera setup it has ever featured on a smartphone. But it seems like they have done an oopsie. While most of the marketing material OnePlus has been pushing out boasts of “3x Optical Zoom”, the reality is that it falls a bit short of that. Instead of a true 3x zoom, it’s telephoto camera only offers 2.2x optical zoom. It instead arrives at 3x zoom by cropping the sensor. Speaking of the sensor, it actually used a 13MP sensor for the telephoto camera. But touts an 8MP f/2.4 telephoto camera, because of the way it crops the image to give you the appropriate level of zoom.
The person who identified this issue found it when he switched between the portrait mode and the main mode at 3x zoom. As the portrait mode uses the telephoto camera, the resulting field of view should be exactly the same, but it wasn’t. Also, images were taken with the portrait mode sport a 13MP resolution.
It’s a pretty curious decision on OnePlus’ end, as it could have advertised the OnePlus 7 Pro as having the 3x lossless zoom and 2.2x optical zoom, and no one would complain. Also, they could then market the OnePlus 7 Pro as having a 13MP f/2.4 telephoto, which should come across as more impressive than 8MP.
This oopsie by them has even slipped DxOMark’s scrutiny. As the renowned camera reviewers mentioned that the OnePlus 7 has a 78mm-equivalent lens. When it is actually a 57.2mm-equivalent (2.2x zoom) with lossless cropping to 3x zoom.
Also, read realme 3pro’s truth.