Nikon 13mm manual Focusing, Lens USE

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 picture-taking situation. Those which are recommended for use with this Nikkor 13mm f/5.6 lens are listed below.

" ~~~——.	Screen	A/L B	C D E	Gl G2 G3 G4 Ht	H2 H3 H4 J K/P M R T
Camera	— _ ^ ^

F 3	•	©	0	o	©	©
F 2	•	©	©	o	©	©
				- 1	- y
						>

m m

© •

©

•When the Teleconverter TC-200 is attached to this lens, use the following table:

ciSr —- _ ff[«" A/L B c D E Gl G2 G3 G4 HI H2 H3 H4 J K/P M R T

F 3	m ©	©	•	m	• •
F 2	• ©	©	•	•	•

©= Excellent focusing

• = Acceptable focusing

The split-image rangefinder, microprism or cross-hair area is dim. Focus on the surrounding matte area.

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., —1 and —H) denote the amount of correction necessary in f/stops. To adjust the camera's Photomic finder for the indicated f/stop correction, lift and turn the film-speed index ring until the ASA/ISO value for the film in use is aligned with the appropriate mark engraved on the ring. In the example figure shown, ASA/ISO 100 is aligned with the —'/2mark to provide the correction required when using the Type H2 screen with a Photomic finder-equipped F2 Nikon camera and mounted Nikkor 13mm f/5.6 lens.

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.