Optoma DC300 User's Manual - Page 22

7. FEATURES LIGHT DC300 is RoHS compliant, which means it meets the rigorous European Unionʼs requirements for restriction of the use of certain hazardous substances in electrical and electronic equipment. DC300 uses eco-friendly, low-power LEDʼs which are cool to the touch and mercury free. ZOOM IN AND ZOOM OUT DC300 enables you to view items in immense detail with 9x optical zoom combined with 12x seamless digital zoom. The advanced optical system of DC300 features high-speed auto focus capability that ensures quick auto focus when you zoom in and out of any object. You can also manually adjust focus to satisfy any special viewing needs by pressing "Fc +" and "Fc -". FOCUS ADJUSTMENT When the document camera is turned on, the focus automatically adjusts. It is not necessary to readjust the focus if you are only working with 2D materials (text, photos, etc.) Only 3D objects require a focus adjustment. Press the "AUTO" button to auto focus. Press the "Fc +" or "Fc -" button to focus manually. BRIGHTNESS ADJUSTMENT You can adjust the camera brightness by pressing the "Bri +" or "Bri -" button. WHITE BALANCE ADJUSTMENT Under different lighting conditions you may need to adjust the white balance. The "AUTO" button adjusts the white balance automatically and also assists with fine focus changes. 22