... market. What is visual presenter? Visual presenter base on CCD or COMS camera, switch object,draft,photo ... ,process into image output ,then display on display equipments, such as project, monitor.Visual presenter ... you can put teaching file or book panel on the presenter panel, the zoom is function can ... 1024 x 768)Zoom22-26×Optical Zoom,8×Digital Zoom ApetureAutoFocusAutoLensF1.4~2.6,f=3.9~ ...