Asus Zenfone 3 Zoom camera tech explained: Telephoto lens, Portrait mode and Dual Pixel auto focus

The Asus Zenfone 3 Zoom features an innovative dual-camera system similar to that of the iPhone 7 Plus: a main, wide-angle camera, and a secondary, 'Zoom' camera that allows you to look closer without the typical loss of detail that comes with digital zooming.

But how does it work and how is it similar and different from the iPhone 7 Plus? Let's take a look.

The Secondary 'Telephoto' Lens and even 'Portrait' mode

While the Apple iPhone 7 Plus features a 28mm main camera and a 56mm, secondary 'Telephoto' lens that ...