TV digital microscope Eyepieces :0.5x reducing lens for CCD or CMOS camera PC connection Zooming range: ... 0.7x-4.5x, ratio 1:6.5 Products detail description TV ... ratio 1:6.52)Eyepieces:0.5x reducing lens for CCD or CMOS camera3)Working distance:95mm4)Boom stand: ... :0.35X, 1x, 1.5x, 2x reducing lens for CCD or CMOS camera6)Optional barlow lens:0.3x, ...