Nikon ED c

desired focus setting, and tighten the preset ring locking screw to set the click-stop

position.

DEPTH-OF-FIELD INDICATORS

Depth of field (i.e., the zone of acceptable image focus) can be checked by reading the

color-coded depth-of-field indicators engraved on the lens barrel. The pairs of colored

lines on either side of the white distance scale index line correspond to f/numbers of

the same color on the aperture scale. You can also observe the depth of field through

the viewfinder by simply pressing the depth-of-field preview button on the camera body.

FILTERS C

The Nikkor ED 800mm f/8 IF uses standard Nikon 39mm screw-in filters, mounted on

a filter holder which is inserted into the body of the lens just behind the tripod mount-

ing collar. To gain access to the filter holder for filter changing, press and turn the

knob on the filter holder 90° counterclockwise until the white line on the knob is

at right angles to the axis of the

lens.

The filter holder will come free and can be lifted

out of the lens. Unscrew the filter and replace it with the one you wish to use. Lock

the filter holder back in place by reversing the above procedure. A special filter holder

is provided with this lens which accepts gelatine filters. 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

•

Gl G2 G3 G4

HI H2 H3 H4

•

K/P

M R

•

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

^-~_^^ Screen

Camera

A/L

•

Gl G2 G3 G4 HI H2 H3 H4 J

•

K/P

•

M R

•

*Vignetting or other performance deterioration may be noticeable in the im

recorded on the film.

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

~"-—-^^^ Screen

Camera ^~""~~---^^

A/L

•

Gl G2 G3 G4 HI H2 H3 H4

•

K/P

•

M R

•

age