Carl Zeiss SLR lens to iPhone 4
Great that one can use Zeiss lenses with iPhone 4, but what’s the use! iPhone 4 camera sensor has crop factor of 7.64 compared to normal 35mm camera. That meanst 50mm lens translates into 382mm (bigger than normal zoom lens on SLR camera). One should use superwide Zeiss lenses to make use of decent angle of view. But 35mm and 50mm Zeiss lenses are the one which are really great. iPhone 4 lens has focal length of 3.85mm which sounds quite reasonable for daily use. Using any SLR lenses, in my opinion, is simply stupid!