All right, first thing first: this is a very new and un-tested idea that Sony is trying to pull off. By making a camera sensor with a Carl Zeiss lens compatible with iOS or Android, the Sony QX100 is essentially a camera you attach to your phone with the included bracket via NFC, or via an NFC pad that is also included with the accessory. To make the images appear on your phone, Sony is published an app called PlayMemories — which is slightly weird, yes.
Physically, it’s a 2.25-tall, 2.5-inch in diameter hunk of technology, with a 20.2-megapixel, 1-inch Exmor R sensor on a 3.6x zoom, 28-100mm f/1.8-4.9 Carl Zeiss lens. Otherwise, there’s a standard ISO of 100-3200 for stills. The main exception, and key drawback, is the movie mode, which only shoots 1440 x 1080 at 30 fps, in MP4 format only.
In case the Qx100 is a bit too big for you, Sony made a smaller version called the QX10, which has a 18.2-megapixel, 1/2.3-inch Exmor R image sensor. The camera features a 10x zoom, 25-250mm (35mm equivalent) f/3.3-5.9 lens.
It costs $250, while the QX100 costs $500; both are releasing this month.