Nikon ED180600MM instruction manual Focusingb, Recommended focusing screens

To attach to the tripod, position the collar tripod socket on the tripod screw and tighten. To rotate the lens (with camera attached) for vertical or horizontal format, loosen the collar locking screw, rotate the lens to the desired position, and retighten the locking screw to secure the assembly. For precise positioning, clickstops are pro- vided at 90° intervals.

FOCUSINGB

The fully automatic diaphragm of this lens enables focusing with maximum image brightness at all times. To focus, loosen the locking screw securing the focusing/zoom- ing control ring and turn the ring until the image on the focusing screen appears sharp and crisp; note that this lens remains at the same focus setting during zooming operation.

To prefocus the lens using the engraved distance scale settings, rotate the focusing/ zooming control ring until the desired camera-to-subject distance setting (as measured or estimated) is lined up opposite the distance scale index line engraved on the lens barrel.

In high or low temperatures, the focal length of the lens might be slightly different when compared with what it is in ordinary temperatures. In this case, you can rotate the focusing ring of the lens slightly beyond the infinity position to focus accurately.

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 Zoom-Nikkor ED 180-600mm f/8 lens are listed below.

"" ~~-^^___^ Screen	A/L B	c D E		Gl G2 G3 G4 HI	H2 H3 H4 J K/P M R T
Camera ^~~~—•—^^
F 3	m ©	•	© 0	o ©	o © •' m	e m
F 2	m 0	•	© ©	o ©	o © • m	•

•When the Teleconverter TC-300 is attached to this lens, use the following table:

~~~——-^____^	Screen	B c	D E Gl G2 G3 G4 HI H2 H3 H4	J K'P M R T
Camera ^~~~--~^____^ A/L
F 3	®	©	©	•	•	•' ®
F 2	•	©	©	•	m	•

•When the Teleconverter TC-14 is attached to this lens, use the following table:

~~~ *»-~^____^ Screen	A/L	B c	D E Gl G2 G3 G4 HI	H2 H3 H4 J	K P M	R	T
Camera ^""-—-—^_
F 3	•	©	©	•	m	•	m
F 2	•	©	0	«	•	•

©= Excellent focusing 8= Acceptable focusing

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

O = Acceptable focusing

Slight vignetting (or moire phenomenon in the case of the microprism) effects the screen image. The image on the film, however, shows no trace of this.

•= Exposure measurement not possible; lens/ screen combination permits only focus- ing operation

Blank means not usable.

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