Oppo's clever, zooming dual camera was inspired by periscopes
 

The dual-camera craze is real at Mobile World Congress, but Oppo decided to break from the pack with its own, very clever implementation. Long story short: the company managed to build a 5x lossless zoom system for smartphones using two sensors and a...

https://www.engadget.com/2017/02/27/...m-dual-camera/