"Autofocus capability" refers to the ability of a device, such as a camera or smartphone, to automatically adjust its focus on a subject without needing manual adjustments. Full definition
For the optics, both the variants have 8 - megapixel shooters on both the sides, but the rear one comes with autofocus capability while the front is a fixed - focus camera. (gadgets.ndtv.com)
I was very impressed with the results and when you pair it with the camera's predictive hybrid autofocus capabilities you can capture moving subjects rather easily with little to no motion blur. (androidauthority.com)
Meanwhile, Asus has officially started to build buzz around the ZenFone 4 lineup on social media, with teaser images unsubtly hinting at dual camera arrangements, powerful zoom and enhanced laser autofocus capabilities. (pocketnow.com)