User manual NIKON NIKKOR ED 800MM F/8 IF

[. . . ] Because of its long focal length, this lens is perfectly suited for a wide variety of situations, including photojournalism, sports and wildlife photography, as well as taking pictures of the sun and moon itself. * When using this lens with non-AI cameras, exposure should be measured by the stop-down method. (For details , refer to your camera's instruction manual. [. . . ] To fit the filter, release the catch, flip open the filter plates, insert the gelatine filter, close the plates and cut off the excess with a sharp knife. The filter holder can then be mounted in the usual way. Please note that due" to a slight difference in thickness between gelatine and glass filters, some focus shift may occur when changing from one type of filter to the other; this discrepancy is easily corrected, however, by slightly shifting the focus setting. A filter must be mounted in the lens at all times. RECOMMENDED FOCUSING SCREENS Various interchangeable focusing screens are available for F2 and F3 Nikon cameras to suit any type of lens or picture-taking situation. Those which are recommended for use with this Nikkor ED 800mm f/8 IF lens are listed below. ^~~~~~~~~~~^^^ Screen Camera ^~~~~~~~~~~^^^ A/L B C D E Gl G2 G3 G4 HI H2 H3 H4 J K/P M R T F3 F2 ^ - ~ _ ^ ^ Camera Screen m m • © • 0 0 © © © • ft © © • © • m V • • • •When the TC-200 teleconverter is attached to this lens, use the following table*: A/L B c D E Gl G2 G3 G4 HI H2 H3 H4 J K/P M R T F3 F2 © © m o o o o c © © • • • • • • • *Vignetting or other performance deterioration may be noticeable in the im age recorded on the film. €¢When the TC-300 teleconverter is attached to this lens, use the following table: ~"-—-^^^ Screen Camera ^~""~~---^^ A/L B D E Gl G2 G3 G4 HI H2 H3 H4 J K/P M R T F3 F2 • • © © 0 o o ft ft © • © • $ • • • m 11 •When the TC-14 teleconverter is attached to this lens, use the following table: ^~~~~~~~~~~~^_ S c r e e n Camera ^~~~~~~-~^^^ A/L B C D E G1 G2 G3 G4 HI H2 H3 H4 J K/P M R T © • • • m © o o © • m • © = Excellent focusing 9 = Acceptable focusing The split-image rangefinder, microprism or cross-hair area is dim. But the image on film shows no traces of this. H = Exposure measurement not possible; lens/screen combination permits only focusing operation Blank means not usable. F3 ® ® © O 0 F2 SPECIFICATIONS Focal length: 800mm Maximum aperture: f/8 Lens construction: 9 elements in 7 groups Picture angle: 3° Distance scale: Graduated in meters and feet from 10m (35 ft) to infinity («°) Aperture scale: f/8 *" f/32 on both standard and aperture-direct-readout scales Diaphragm: Fully automatic Exposure measurement: Via full-aperture method; meter coupling ridge provided for AI cameras Focusing: Nikon Internal Focusing (IF) system Lens hood: Telescopic type built into front of lens Tripod mounting: Via socket in tripod mounting collar; collar rotatable on lens to permit vertical and horizontal format picture-taking; positioning index marks provided at each 90° of rotation; collar locking screw provided Filter: Built-in insertion-type filter holders accept 39mm screw-in or gelatine filters Mount: Nikon bayonet mount Attachment size: 122mm (P • 1mm) Dimensions: 134mm0 x 460mm long (overall); 452mm extension from flange Weight: Approx. 3, 300g Accessories Slip-on leather front lens cap Rear lens cap LF-1 Built-in 39mm screw-in filter L37C Gelatine slip-in filter holder 39mm screw-in filters 122mm screw-in filters Teleconverter TC-200 Teleconverter TC-300 Teleconverter TC-14 Aluminum Trunk CT-1203 12 A B O U T THE NIKKOR F n ^PRIP^ Correction of chiomatic aberration in camera lenses has been limited, for the most part, to the use of techniques which bring * w o wavelengths °f light, normally blue and red, to a common focus. Although known as "achromatic, " lenses employing these designs exhibit a certain amount of undesirable residual dispersion (called the "secondary spectrum") which limits image contrast and sharpness, particularly at full aperture. Telephoto lenses are most prone to the ill effects of chromatic aberration, since secondary spectrum increases with focal length. [. . . ] ^>Xi:ifiii Lens Care • Although you should always keep the lens surfaces clean, rough cleaning must be avoided. 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. [. . . ]