... ; 4)mount:M12*0.5/phi14.0; 1)name:drive iris monofocal lens;2)focal length:4mm;3)aperture:1/1.2;4 ... Monofocal fixed iris lens,monofocal manual iris lens,monofocal auto iris lens,Manual vari focal manual vari focal lens,Manual vari focal auto iris lens,board lens,anto iris Monofocal lens(Video)auto iris monofocal lens(DC)etc ... 16 (mm) etc or as your requirement.The aperture of lens are 1/1.2,1/1.4,1/1.6 ...