Canon 455X RE-455X_manual.pdf - Page 35

Manual Focusing When auto focus doesn't focus correctly or when focusing on a particular point of a three-dimensional object, you can focus manually. Manual focusing is available up to approx. 65mm above the document table. Because of depth of field, sharp focus may not be achieved for the entire area of a three-dimensional object. Follow the procedures below. ቢ Press the FOCUS button to switch to manual focus mode. ባ Press the NEAR button or the FAR button to adjust the focus. Operation panel DETAIL SOFT HARD AUTO FOCUS MANUAL NEAR FAR ZOOM WIDE TELE ZOOM PRESET STILL PICTURE To return to auto focus mode, press the FOCUS button. FOCUS button • When the FOCUS button is pressed for two seconds or longer, the mode will switch to one-shot auto focus (one-shot AF: once focus is achieved on the subject, focus will be locked in this mode). This mode is recommended when changing subjects often. • When switching projection between three-dimensional objects and paper documents and in other similar cases, switch to one-shot AF mode first, then press the FOCUS button achieve focus. • The FOCUS indicator flashes in one-shot AF mode, and it turns off once the subject is properly focused. • To return from one-shot AF mode to normal auto focus mode, and hold press the FOCUS button for two seconds or longer. E ■ Undesirable objects for focusing Objects such as those listed below may present some difficulty with focusing. If this happens, focus the lens manually. 1. Objects with a low reflection factor (such as a dark cloth, hair, etc.) 2. Objects having a glossy or reflective surface (glassware, etc.) 3. Objects viewed through glass. 4. Objects with low contrast. 5. Objects with only horizontal lines or diagonal lines. 12