Its 20x advance macro photography lens ...Its not for normal shot and selfie ..Its not zoom lens ...Mini mum focal length 2 centimeter from subject...You'll need to get super close to get the best detail when use the macro lens, and where from 10-23mm from your object, the flash light should be turned off when use the macro lens on the phone. Macro specification macro lens can take clear photos of small objects, the world in macro is marvellous. Discover the beauty of the detail from object, feel microcosm. Magnification : 20x; min object distance : 10-25mm; lens construction : 3 element 3 group; max diameter : 15mm; length : 10mm.