[. . . ] Two vibration reduction modes are available: (1) the [NORMAL] mode for reducing camera shake, and (2) the [ACTIVE] mode for reducing camera shake when taking pictures from a moving vehicle. Panning is also possible, as the lens automatically distinguishes panning from camera shake (in [NORMAL] mode) and vibration reduction works effectively. Autofocus (A) or manual (M) mode can easily be selected with the Focus mode switch. Autofocusing with manual override is provided, allowing instant change from autofocusing to manual focusing. [. . . ] The use of two ED (extra-low dispersion) lens elements ensures sharp pictures virtually free of color fringing. Also, by utilizing a 9-blade diaphragm that produces a nearly circular aperture, out-of-focus images in front of or behind the subject are rendered as pleasing blurs. When mounted on Nikon digital SLR (Nikon DX format) cameras, such as the D2-Series and D50, the lens' picture angle becomes 22°50'- 5°20' and its 35mm equivalent focal length range is approx. If the lens mount rubber gasket " is damaged, be sure to visit the nearest Nikon authorized dealer or service center for repair. Note: Be sure to set the switch so that the indicator aligns with Indicator [M/A] precisely. 2 Autofocus is provided, but you can manually override the focus M M/A by operating the separate Focus ring 8 while lightly depressing the shutter release button or the AF start (AF-ON) button on the camera. 3 To cancel manual override, again lightly depress the shutter release button or the AF start button on the camera. Infrared compensation With infrared film, manual compensation must be made to the focused distance. Focal length Compensation from distance index line % 70mm 100mm 135mm 200mm 300mm Shift the distance scale to the infrared compensation index $. Camera shake when taking pictures from a moving vehicle Set the vibration reduction mode switch to [NORMAL]. When taking pictures Set the vibration reduction mode switch to either [NORMAL] or [ACTIVE] When taking panning shots Set the vibration reduction mode switch to [NORMAL]. If your camera has a depth of field preview (stop-down) button or lever, depth of field can be observed while looking through the camera viewfinder. For cameras with TTL metering, there is no need to adjust the aperture. likewise , for TTL auto flash photography with Nikon Speedlights , no adjustment is required. When using a separate exposure meter or taking photographs in the non-TTL flash mode, select the appropriate aperture value according to the focal length setting as displayed on the camera. Attaching the hood Align the lens hood attachment index ( ) 2 on the hood (either one of the two indexes) with the lens hood mounting index 4 on the lens, and turn the hood 1 clockwise until it click stops to secure. Make sure that the lens hood mounting index 4 aligns with the lens hood setting index ( ) 3. To facilitate attachment or removal of the hood, hold it by its base (around the lens hood attachment index) rather than its outer edge. Detaching the hood While holding the base of the hood (near the lens hood attachment index) rather than its outer edge, turn it counterclockwise to detach. Flash pictures using cameras with a built-in flash Various interchangeable focusing screens are available for certain Nikon SLR cameras to suit any picture-taking situation. The ones recommended for use with this lens are: When using screens other than type B or E, "Other screen" must be selected even when the required compensation value is "0" (no compensation required). Since type M screen can be used for both macrophotography at a 1:1 magnification ratio and for photomicrography, it has different applications than other screens. [. . . ] When using the B and E focusing screens in cameras other than those listed above, refer to the columns for the B and E screens. 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. [. . . ]