[ t“- FAA23051-R. 3248. A .
Nikon I FAA23051-R.3248. F4 SUPPLEMENT OF NIKON F4 SPECIFICATIONS Autofocus 1. {1) AF detection range EV-1 to EV18 (at” ISOIOO) (2) AF mode AF-c (continuous servo autofocus) “ Shutter can be released regardless of focus status; in focus or out of focus. ● The camera continues focusing according to the movement of the subject for as long as you keep the shutter release button lightly pressed. s The camera switches to focus tracking mode at AFC+CL.
. . * ,., ,(4) Filters for autofocus - ,! , I @AA23051-R.3248.A . Two filters for normal shooting and AF illuminator are incorporated which switch automatically according to the shooting situation to improve AF actiracy by ‘eliminating the error of illumination. (See below) .,. Q Filter will be switched when the spot metering value is less than BV2 or over BV5 as described below while pressing the shutter release button lightly under the AF illuminator firing condition.
. . .. -., . I FAA23051-R.3248.A 2. Metering (1) Exposure metering system , TTL matrix metering, TTL center-weighted metering and, T T L s p o t m e t e r i n g (2) Full aperture exposure compensation’ . Electrical (3) exposure compensation - Metering range (at f/1.4, 1S0100) EV O TO EV21 (up to EV16 + 1/3) with TTL rnatrix”’”metering. EV O to EV21 (with ,multi-meter finder DP-20.), EV2 to 21 (with AE action finder DA-20) with TTL center-wei~hted metering. EV2 to EV21 with TTL spot metering.
I FAA23051-R.3248.A Metering system is automatically changed in centerweighted metering mode when a lens other than one of those mentioned above is mounted, or no lens is mounted in matrix metering mode. For further details, see your instruction manual. ‘ Metering area and its output Two matrix vertical sensors incorporated in the multimeter finder detect the vertical and horizontal position.
I f FAA23051-R.3248.
.,. h I FAA23051-R.3248. A 3. Exposure control (1) Programmed auto exposure modes (P, PH mode) P, PH mode with DP-20 multi-meter finder ,rnounted Item” Description Built-in CPU lens Non-CPU lens ; (including AF lens for F3) Shutter speed control ‘ i“ P and PH modes are’ available. ,. Automatically shifted to A mode Viewfinder ”display also shifted to A mode Refer to the EV chart (controlled within the range of 30 to 1/8000 sec.
I 1 FAA23051-R.3248.A (2) Aperture-priority auto exposure mode (A mode) A mode with DP-20 multi-meter finder mounted Item Description CPU built-in lens A mode is available. Non-CPU lens (including AF lens for F3) A mode is available. This mode, operates with, virtually all Nikon lenses. Shutter speed control Controlled within the range of 30” to 1/8000 sec. Shutter speed display Indcated in l/2EV steps in the viewfinder Aperture value Can beset to within the f-number (F- FO) of the lens.
I FAA23051-R.3248.A (4) Shutter-priority auto exposure mode (S mode) S mode with DP-20 multi-meter finder mounted . Item Description CPU built-in lens S mode is available. Non-CPU lens (including AF lens for F3) Automatically shifted to A mode Viewfinder display also shifted to A mode. Shutter speed control Can be set to within the range of 4 to 1/8000 sec. in lEV step.
I , (5) Film speed setting Manual film setting DX-coded film setting In DX mode FAA23051-R.3248.A 1S06 to 1S06400 1S025 to 1S05000 If camera back is closed without loading DX-coded film or patrone, “an LED indicator blinks to alert at 8HZ, and shutter release is locked and an auto film loading becomes impossible. If DX-coded film patrone is loaded, but the film speed is set manually, the camera gives priority to the manually set I SO number.
I FAA23051-R.3248.A 1 (11) Shutter unit (Nikon’s original development) Special tungsten-alloy shutter balancer absorbs vibration due to the shutter curtain travel. Dual multi-bladed curtain system: When shutter release button is fully depressed, the rear curtain goes up -> the front curtain starts traveling downward –> the rear curtain follows the front curtain downward -> original dual-curtain formation.
! F~23051-R.3248.A *If T setting .is canceled before shutter prerelease timer turns OFF, immediately the mirror moves downward and film advances in 32 seconds after shutter is released. Rear curtain sync flash photography ah T (time) setting is automatically switched to front-curtain sync. (Rear-curtain sync is impossible.) T (time) setting (13) “ Basically mechanical control. “ Current flows to the Mg for 32 seconds after shutter is released at T setting.
I I FAA23051-R.3248.A Frame counter and databack when taking multiple exposures. (with DP-20 multi-meter,finder) Body alone Frame counter of the body does not count up . LCD counter (in FD) does not count up. M??-23 camera back Frame counter of the body does not count up . LCD counter (in FD) does not count up. Frame counter of the MF-23 counts up. The frame number does not correspond to that of the body because the frame counter counts up every time the film advance switch turns ON and OFF.
] FAA23051-R.3248.A (3) Film loading and blank exposures @ Normal advance film loading. (Spool drive system) (Sprocket drive system when the FM-24 camera back is mounted.) @ Blank film advance Fully depress the shutter release button while opening the camera back to rotate the film take-up spool for a certain period of time. If film is loaded, approximately 0.5 frames are advanced on the spool. c Spool motor advances film by duty (pulse) -driving in order not to damage film perforations.
I FAA23051-R.3248. A (4) Film advance and mechanical sequence @parallel drive Shutter release Current flows in shutter ~charge magnet. Shuttr release CL+C–AF Mg-ON Mechanical shutter hold Ii Cs is released. Mirror latch Rear curtain returns Film is loaded. is released. (dual curtain shutter is released) I (Film detection Mirror moves up + switch is OFF) Aperture control system works —— Camera back (Aperture PI works) Front curtain Mg is OFF. .~;%~”.-. is closed. . . . . . . . . . . . . . . . . . ..
I FAA23051-R.3248.A Shutter release @Series drive Current flows in shutter ~charge magnet. Shutter release Ma-ON CL s Film is loaded. (Film detection switch is OFF) Camera back is closed. (Camera back switch is OFF) “ ~Mechanical shutter hold is released. I Rear curtain returns ‘ (dual curtain shutter is released) Mirror latch is released. I Mirror &oves up + Aperture control system works (Aperture PI works) Front curtain Mg is OFF.
I FAA23051-R.3248.A spool motor and shutter charging motor Total mechanical charging is completed. I Rear curtain travels. 8 1 Rear curtain switch i I I Charging switch ON OFF ON a I i , I i 88 Shutter charging cam rotates. Shutter charging moto~ ~ . . . . . ... . . . . . . . . . . . . . . . . . Film adv~ce completion switch / is turned OFF :::% ;;:$:E:: Film advance completion switch ON Spool motor OFF I I6 Fi”lm advances.
I FAA23051-R.3248.A Film advance completion signal: ● Same as the film advance completion switch. Film sprocket rotates when film advances through the ‘film take-up spool, and the film advance completion switch turns ON and OFF. Shutter charge cam rotates Film advance completion switch ‘w (6) Film rewind Manual film rewind: Rewinds film after turning the film rewind lever RI.
I FAA23051-R.3248.A You have the option to either leave the film leader in the camera or not by rewriting the data on the EEPROM memory chip. If you select to leave film leader, the film rewind motor stops immediately after the film detection switch turns from OFF to ON. Film leader leaves when rewinding film when the frame counter shows less than 1 (frame counter switch is ON) disregarding EPROM data. If you turn film rewind lever (R2) alone, an LED indicator (alert LED) blinks and alert at 8Hz.
I FAA23051-R.3248.A 8) Distance between frames (mm) Standard MF-24 (9) Other than CS mode +0.2 2-0.4 +0.3 2-0.5 Sequence CS mode +().7 2-0.9 —————. errors blinks at 8Hz to alert in An LED indicator (alert LED the following errors: Q Mechanical charge sequence error: Mechanical charge pulse is not output for over 255ms during shutter charge completion switch turns ON until it turns OFF.
I FAA23051-R.3248.A MB-21 Alkaline-manganese, Ni-Cd, and Manganese batteries are acceptable, but some Ni-Cd models can not be acceptable due to the F4’s reverse mounting preventive mechanism. Vertical position shutter release button, battery check function, remote connector and battery identification switch (changes battery checker level by selecting alkaline-manganese or Ni-Cd batteries) are provided. MB-22 Nikon AC/DC Grip unit in common with the MB-21.
I FAA23051-R.3248. A (3) Battery checker MB-20 is mounted: Checks battery by using shutter prerelease timer in the body side. Shutter prerelease timer prolongs 16 seconds: Battery is usable. Shutter prerelease timer prolongs O second: Battery is used up. No viewfinder display appears, shutter release is locked: Change batteries. MB-21 is mounted: See specifications of the MB-21. (4: “a @ @ Current consumption (when DP-20 is mounted at’ ordinary temperature (20”C) using MB-20.
I 6. FAA23051-R.3248.A Data back contacts @ Inspection contact @. Shutter prerelease/release signal contact @ Data imprint signal contact @ 1/0 contact @ DC 1/0 contact @ Clock signal contact ~.
FAA23051 -“ R. 3248. Time chart (stand-by film advance, blank shot) Camera switch Shutter release switch --- I Shutter prerelease~ switch ““- 1 I I Shutter charge motor I Shutter. chafge completion switch I I T Braking time *(30msec.) Film take-up spool motor -#b - T2 Film advance switch 1~ Frame counter switch Approx. 25msec. > --- --‘7L‘---r - nm --- n i.-Fi_---l -k I -—Stand-by film advance Blank shot ‘-fI I Blank shot is completed.
- R.3248.A Time chart (using AA penlight battery x 4, in CH mode, AF-C mode, at room temperature) Shutter pre-r?lease switch CPU reset, data transfer 1 ’100 to 150maec, :&u:~hr release (3 to 4 maec.~ Shutter releaae Kg lever Mirror Mirror up (approx. 35msec.) n Apexture stop-down Aperture - - - - -- - ~lycure atop Delay time e Opening shutte r Time lug ~— Shutter cm-m in curtain Mg lever Wg is off Approx. 25maec.
