The One X continues this trend by delivering one of the best all -
round imaging experiences we've come across without sacrificing quality — thanks to an 8 - megapixel backside - illuminated sensor, an incredibly wide aperture f / 2.0 autofocus lens (vs. f / 2.2 on the Amaze 4G, f / 2.4 on the iPhone 4S, f / 2.65 on the Galaxy S II and f / 2.8 on the N8) and an extra processor called the ImageChip.