[. . . ] (To remove, depress the lens release button on the camera and twist the lens clockwise. ) Note: When mounting the lens on an Al-type camera with a lift-up meter coupling lever, make sure the lever is in the "down" position; when mounting on a camera without this lever (non-AI type), "manual" maximum aperture indexing is required. [. . . ] O = Acceptable focusing Slight vignetting (or moire phenomenon, in the case of the microprism) affects the screen image. Note: The Teleconverters TC-301, TC-300, TC-14B and TC-14 cannot be attached to this lens. VARIABLE APERTURE As the lens is zoomed out from 35mm to 135mm, the maximum aperture goes down by approximately two-thirds of an f/stop, from 3. The two aperture indexes engraved on the chrome mounting ring indicate the difference: the green index is for use at the 35mm setting, while the brown one is for the 135mm setting. For intermediate focal length settings, align the aperture ring between the two indexes. The relationship between the focal length and the maximum aperture is shown in Diagram 1. When the zoom lens is used with cameras with throughthe-lens (TTL) metering, you need not worry about adjusting the aperture, However, when an independent exposure meter is used, slight adjustment is required, as in Diagram 1. 8) ZJ ; 35 50 70 — Focal Length 135 (0 FLASH PHOTOGRAPHY Follow the instructions below when you take pictures with the speedtight unit because the maximum aperture of this lens varies according to the focal length set. €¢ In TTL automatic flash photography (when using the SB-18, SB-17, SB16AJBorSB-15) No adjustment is required because the variation in aperture is automatically accounted for. However, when the flash-to-subjecl distance is close to either the near or far limit of the auto shooting range corresponding to your working aperture, the working aperture may have to be changed as you zoom in or out. 12 • In non-TTL automatic or manual flash photography Slight adjustment is required. You can obtain the roughly correct exposure over all focal length settings by using the intermediate setting between the green and brown aperture indexes. For perfect exposure, adjust the coupling aperture according to Diagram 1. €¢ In combination with the speedlight SB-19 or SB-E mounted on the Nikon FG-20 or EM Make sure you set the shooting mode selector of the SB-19 or camera selector of a new-type SB-E to the "A" position. [. . . ] Wipe with a soft, clean cotton cloth moistened with alcohol to remove grease or fingerprints from the lens surfaces. If you use ether in cleaning the lens, a smudge sometimes appears on the surface of a multi-coated lens. [. . . ]