Canon 2511B001 PowerShot SD1100 IS / DIGITAL IXUS 80 IS Camera User Guide - Page 92

90 z [Face Detect] cannot be used when the LCD monitor is turned off. z The AF frame appears as follows when the shutter button is pressed halfway. - Green : In focus - Yellow : Focusing difficulty (AF frame set to [Center]) - No AF frame : Focusing Difficulty (AF frame set to [Face Detect] or [AiAF]) Face Detect Feature • Maximum of three frames will be displayed at the positions of the faces the camera recognizes. At this point, the frame the camera judges to be the main subject appears in white while the others appear in gray. When the shutter button is pressed halfway and focusing is successful, up to nine green AF frames may appear. • The camera will shoot using [AiAF] not the [Face Detect] function if a white frame fails to appear and only gray frames display, or if a face is not detected. • The camera may mistakenly identify non-human subjects as a face. • In certain cases, faces may not be detected. Examples: - If faces appear extremely small, large, dark or bright, relative to the overall composition. - Faces turned to the side or at a diagonal, or faces with a portion hidden.