User manual NIKON AF DC-NIKKOR 135MM F-2 D

[. . . ] Turning the ring beyond the aperture in use lets you create a soft-focus effect. (In thes case, do not use the autofocus and focus manually using the clear matte field in the viewfinder. [. . . ] To select manual, turn the A-M ring so "M" aligns with the A-M index. With a Nikon autofocus camera, improperly setting the camera's focus mode selector and lens' A-M ring may damage the camera body. Various interchangeable focusing screens are available for Nikon cameras to suit any type os lens or picture-taking situation. Those which are recommended for use with your lens are listed below. for determining the frame type and focusing Screen Camera F6 F5 with DP-30 F5 with DA-30 F4 with DP-20 F4 with DA-20 F3 Clean lens suface 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 and not to touch the other lens parts. Never use thinner or benzine to clean the lens. To protect the lens surface from dirt or damege, use of an NC filter is recommended at all times. Cover lens with lens cap when lens is not in use. Attach both front and rear caps when the lens is stored separately. If you will not use the lens for a long time, protect it from rust and mold by storing it in a cool, dry place. Also, do not store in direct sunlight, and keep it away from naphthalene or camphor. Be careful not to get the lens wet or drop it in water. [. . . ] Pull out the hood and turn it counterclockwise for two rotations (see Illst. To store, turn the hood clodkwise and push back. [. . . ]