Your iPhone or expensive Android device already has a pretty decent camera. But you can do a whole lot more with the Sony QX30. This is a nifty gadget that turns your phone into a 30x optical zoom camera, accomplishing that using WiFi or NFC. You will be able to use your phone’s large display to shoot and view images. With the DSC-QX30 camera at your disposal, you will be able to save your photos both to the camera and phone memory. Let’s not forget that this is a detachable gadget, so you can take it off to have more flexibility capturing tougher shots.
The DSC-QX30 has a back-illuminated 18MP 1 / 2.3″ Exmor R CMOS sensor, so you will be able to produce better photos in low light conditions. The device also lets you capture 1920×1080/60p HD video in MP4 format. Optical SteadyShot image stabilization is also included to improve the quality of your work. The DSC-QX30 is compatible with iOS and Android devices.[Source]