1,RS-232 control 2,22 optical zoom , 10 E-zoom 3,1/3 CMOS, 1,300,000 PIXEL 4,Text /graphic switch 5,Digital document camera ModelAV-2800HVCOptical systemLensF=1.6~3.7,f=3.9~88mmCamera scopeMAX: 350mm×240mmEffective pixel1,300,000 Zoom22optical power zoom, 10 multiple digital zoomApertureAutomatic FocusingAutomaticLighting system bilateral light, LED light*2, bottom light,LEDCCD cameraCCD camera 1 ...