Nikon 1768 Instruction Manual - Page 44

SPECIAL FOCUSING SITUATIONS I ~C 1& :,'5 F5.6 I Autofocus operation depends on general lighting, subject contrast and detail, and :J other technical factors . In rare situations where autofocus (and manual focus with Electronic Rangefinder) is not possible, ~ ~ blinks telling you to focus manually with clear matte field (p. 48) or perform autofocus on another subject located at same distance. A. Very dark subject Focus manually with clear matte field , or for autofocus, focus on another brighter subject located at same distance, then use focus lock (pp. 38-43). Or, use a Nikon autofocus Speedlight to perform autofocus with Speedlight's AF illuminator. B. Low contrast subject Focus manually with clear matte field, or for autofocus, focus on another subject at same distance but with more contrast, then use focus lock (pp. 38-43). C. Strongly backlit subject or bright subject with shiny surface such as silver or aluminum, or scene in which there is a pronounced difference in brightness, such as the light patterns created by blinds. Focus manually with clear matte field. 44