User manual NIKON AF-S DX ZOOM-NIKKOR 12-24MM F-4G IF

[. . . ] Before using this lens, please read these instructions. Autofocus (A) or manual (M) mode can easily be selected with the focus mode switch. [. . . ] Taking flash pictures with cameras having built-in flash When using the following camera, check the focal length and shooting distance before taking flash pictures to prevent vignetting since the light emitted from the flash may be obstructed by the lens barrel. Distance index line Entfernungs Indexlinie Ligne de repère des distance Línea indicadora de distancias Align the lens hood attachment index ( ) on the hood with the lens hood mounting index on the lens, and turn the hood counterclockwise (as viewed from the camera side) until it click stops. Make sure that the lens hood mounting index aligns with the lens hood setting index ( ). If the lens hood is not correctly attached, vignetting can occur. To facilitate attachment or removal of the hood, hold it by its base rather than its outer edge. While holding its base rather than its outer edge, turn the hood clockwise as viewed from the camera side to detach. Clean the lens surfaces with a blower brush. To remove dirt and smudges, use a soft, clean cotton cloth or lens tissue moistened with ethanol (alcohol) or lens cleaner. Wipe in a circular motion from center to outer edge, taking care not to leave traces or touch other parts of the lens. Never use thinner or benzene to clean the lens as this might damage it, result in a fire, or cause health problems. To protect the front lens element, an NC filter is recommended at all times. A lens hood also helps protect the front of the lens. [. . . ] When the main subject is a small, patterned subject or scene. B, when the subject is highly patterned or of low contrast, such as a field covered with flowers, autofocus may be difficult to obtain. [. . . ]