Did you know: This 2014 Galaxy phone had 10X optical zoom - Android Authority
Hands-On With Samsung's Galaxy S4 Zoom, The Smartphone With A 10x Optical Zoom Lens | TechCrunch
Samsung's new phones bring 100-times zoom, folding screens, higher prices | The Seattle Times
Amazon.com : Samsung Galaxy Camera with Android Jelly Bean v4.1.2 OS, 16.3MP CMOS with 21x Optical Zoom and 4.8" Touch Screen LCD, WiFi (White) (OLD MODEL) : Point And Shoot Digital Cameras :
Galaxy S4 Zoom vs Galaxy Camera hardware photos leak - Android Community
Optical zoom & smartphones – the next big thing? - Shawn X.Y. Bai - 博客园