... 22X optical zoom , 8X digital zoom 1,300,000 pixels color camera USB and RS-232 Image stora Document camera Technical Specifications Model 2800HV2800SD2800SVOptical ... ×270 mmZoomOptical 22 times, digital 8 timesOptical 22 times, digital 8 timesOptical 22 times, digital 8 timesFocusAutomaticAutomaticAutomaticApertureAutomaticAutomaticAutomaticVideo systemCamera1 / 4 "CCD Colorful1 / 4 " CMOS ...