FOCUSING
To focus, rotate the focusing ring until the image in the viewfinder appears sharp and crisp.
Recommended Focusing Screens
Various interchangeable focusing screens are available for F2 and F3 Nikon cameras to suit any type of lens or
" | Screen | A/L B | C D E | Gl G2 G3 G4 Ht | H2 H3 H4 J K/P M R T |
Camera | — _ ^ ^ |
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|
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F 3 | • | © | 0 | o | © | © | |
F 2 | • | © | © | o | © | © | |
- 1 | - y | ||||||
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| > |
© •
©
•When the Teleconverter
F 3 | m © | © | • | m | • • |
F 2 | • © | © | • | • | • |
©= Excellent focusing
• = Acceptable focusing
The
0= Acceptable focusing
Slight vignetting (or moire phenomenon in the case of the microprism) affects the screen image. The image on the film, however, shows no trace of this.
Blank means not usable.
Note: Light transmission properties vary somewhat with focusing screen type, thus occasionally requiring exposure correction to compensate for the combined effects of the lens/screen/camera combination in use. The numbers listed in certain columns of the combination table above (i.e.,
LENS USE
•Due to the unique optical construction and wide picture angle of the Nikkor 13mm f/5.6 lens, careful planning is required when composing and shooting. The photographer should check that all unwanted or distracting elements (e.g., the legs of the tripod, etc.) are well outside the picture field. More importantly, strong light sources, even those outside the picture angle, should be eliminated or controlled as much as possible to prevent ghost images.