Nikon f2 - Manual (Page 45)

ADJUSTMENTS
Adjustments for Focusing Screens
Light transmission properties vary somewhat with focus­
ing screen type, thus occasionally requiring exposure
correction to compensate for the combined effects of
the lens/screen combination in use. The numbers listed
in various blocks of the table on the opposite page de­
note the amount of correction necessary in f/stops. To
adjust the camera’s finder for the indicated f/stop cor­
rection, lift and turn the ASA film-speed index ring
until the ASA value for the film in use is aligned with
the appropriate mark engraved on the ring. In the ex­
ample figure shown, ASA 100 is aligned with the —V 2
mark to provide the correction required when using the
Type C screen with the Nikon F2SB Photomic camera
and the Fisheye-Nikkor 8mm f/2.8 lens, as indicated in
the table. (When “0” is indicated in the table, no com­
pensation is required.)
T = Exposure measurement via full-aperture method.
■ = Exposure measurement via stop-down method.
■ = Exposure measurement not possible; lens/screen
combination permits only focusing operation.
Blank space indicates lens/screen combination cannot be
used.