Nikon F4 User Manual
Page 172
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Exposure metering
Exposure meter switch
Metering range
Exposure controi
Auto exposure iock
Exposure
compensation
Muitipie exposure
Depth-of-fieid
preview button
Reflex mirror
Shutter
Shutter reiease
Matrix Metering (with Multi-Meter
Finder DP-20); Center-Weighted
Metering (with Multi-Meter Finder
DP-20 or AE Action Finder DA-20);
Spot Metering (with any finder)
Activated by lightly pressing shutter
release button; stays on for approx.
16 sec. after lifting finger from button
EV 0 to EV 21 at ISO 100 with f/1.4
lens; EV 2 to EV 21 with Spot
Metering
Manual (M), and Programmed
(P
h
,
P), Shutter-Priority (S) and Aperture-
Priority (A) Auto Exposure
Available by pressing AE-L button
while meter is on
Possible using exposure compensa
tion dial within +2 EV range in 1/3
EV steps
Via lever
Provides visual verification of depth
of field; can be previewed in M or A
mode; coaxial with mirror lockup lever
Automatic instant-return type with
lockup facility
Electromagnetically controlled verti
cal-travel focal-plane shutter; shutter
balancer incorporated
Electromagnetic shutter by magnet
trigger