Nikon FG - Manual (Page 16)

Programmed exposure measurement graph
The graph represents the optimum combinations of
f/stop and shutter speed, for the brightness of any
scene, which were determined through intensive
statistical and empirical studies and fed into the FG's
computer brain for its pre-arranged exposure pro­
gram. Thus, when actual exposure measurement
takes place at the time of shooting, the ideal combi­
nation for actual conditions is selected and perfect
exposure results for every shot
(Graph—green line represents the curve for the f/1.4
lens. For lenses with other apertures, the graph is
read from that particular aperture opening until inter­
section with the diagonal line and then in the same
downward line, e.g., the black line for the f/4 lens.)
Notes:
1) OnP, the following lenses will cause slower shutter speeds
than those indicated in the viewfinder while correct expo­
sure is assured. Therefore, in cases where more exact
shutter speed information is desired. A or manual mode is
recommended:
50mm f/1.2 NIkkor (No. 250525 or smaller)
58mm 1/1.2 Noct-Nikkor (No. 175000 or smaller)
ED50'^300mm f/4.5 Zoom Nikkor (No. 179500 or smaller)
Every Al-converted 85 mm f/1.8 Nikkor
Every Ai-converted 105mm f/4 Micro Nikkor
Every Al-converted 8S'^250mm f/4 Zoom Nikkor
2) On P. the following lenses and accessories cannot be used
as they do not have an aperture coupling device. Use
these lenses on A or manual modes.
All Reflex Nikkors
AlIPCNikkors
(when perspective is shifted, use manual mode)
Bellows attachment
Extension Ring Set K
3) On P, when using teieconverters or Ai-converted lenses <
maxim um apertures of f/4.5 or smaller, shutter speec
available are lim ited to very stow ones. Therefore. A c
manual mode is recommended.
4) On P. vrhen using Al-converted lenses of maxim um ape.
lure larger than 1/2.8. the metering range for the higher E
vaiues will be reduced down to a maximum of two EVs di
(2) Set the desired f/stop on the lens.
(3) Turn on the audio warning system.
(4) While looking through the viewfinder, depress the
shutter release button halfway to turn on the expo­
sure meter. If the audio warning does not sound,
the scene brightness is within the FG's metering
range—focus and shoot. The shutter speed auto­
matically set is indicated in the viewfinder by
either one LED or two LEDs. If the audio warning
sounds, LEDs in the vietwfinder will indicate one of
the conditions described on the next page.