Mobile phone's lens has no optical zoom ability so it acieves only small fold digital zoom, when taking photo for far scenery with zoom, its photo quality is not ideal. Thid 12X optical lens is small and light. It is desinated for iphone 5 after installed on the case, iphone 5 becomes a real 400mm focal length long lens small cannon. Feet shelf is designated flexible suitable for different photo height. Feet shelf is also equipped with a snall cloud paltform which supports iphone 5 horizontal and vertical photo which is practical. This delicate and simple design adds new long lens shooting experience for iphone 5, now users can take iphone 4 LESUNG 12X long lens to catch birds. 12x external lens photo's optical quality is better than digital zoom quality. As it is telscope, compared with normal camera, its four angle has light loss phenomenon, and small distortion phenomenon. But small 12X iphone 5 external long lens makes iphone 5 have far shooting ability for several hundred or thousand meter, which provide mobile phone photo fans with more tools.