AE Finder FN

The primary role of the AE Finder FN is to convert the camera to aperture-priority AE or stopped-down AK. For these two modes, a shutter speed scale and, with a New FD lens mounted, the pre-set aperture are displayed below the field of view.

Manual exposure is also possible with the finder. In manual, the aperture scale and shutter speed are displayed to the right of the field of view. Thus AE and manual modes are clearly differentiated and you know immediately in which mode the camera is set simply by the location of the exposure information.

Focusing Screen FN-AE, which provides center-weighted average metering, is supplied when the New Canon F-1 is purchased initially with an AE Finder FN.

I. Aperture-priority AE
1. After attaching the AE Finder FN, set the shutter dial to "A." To do this, pull up the outer ring and turn the dial until "A" is aligned with the index on the finder. The shutter dial cannot be turned between the "A" and "B" settings.
2. Turn the lens' aperture ring to the desired aperture.
3. Look into the viewfinder and focus the subject.
4. Turn the meter mode selector to "A". Then press the shutter button halfway to turn on the meter. Exposure will be correct as long as the meter needle is not pointing to either of the exposure warning zones. If the meter needle is in either zone, turn the aperture ring until it moves out of the zone.
5. To release the shutter, press the shutter button all the way down.
There is a possibility of camera movement if the meter needle indicates a shutter speed of 1/30 sec. or slower. In this case, choose a larger aperture until the shutter speed indicated is 1/60 sec. or faster. If you have set the maximum aperture and the shutter speed is still slower than 1/60 sec., attach the camera to a tripod, use a flash or add artificial light.

On the other hand, if the meter needle indicates over~exposure even after you have set the m~n~mum aperture, attach a neutral density (ND) filter to the lens. This will reduce the amount of light to the film.

If the shutter dial is set to "A" before the finder is attached, exposure information will not be displayed. In this case, first turn the shutter dial to "2000," then back to "A."

1. Exposure information will not be displayed with a different finder attached and the shutter dial set on "A."
2. With a New FD lens "without chrome mount ring), the aperture is displayed adjacent to the shutter speed scale in the viewfinder. It is impossible, however, to read the aperture when using an FD lens with a chrome mount ring or when using an extender, extension tubes or other close-up accessories between the camera body and lens.
3. If your eye will not be to the eyepiece the moment you release the shutter, close the eyepiece shutter by pushing the lever clockwise. This will prevent stray light from entering and adversely affecting the exposure.

II. Stopped-down AE
1. Following the procedure on p. 40, set the shutter dial to "A."
2. Look into the viewfinder and focus the subject.
3. Turn the lens' aperture ring to the desired aperture.
4. Unlock the stop-down slide. To do this, push it in~and then release it; the slide will unlock and its red line can be seen.
5. The shutter speed is automatically selected according to the aperture set on the aperture ring.

If the meter needle is in either exposure warning zone, turn the aperture ring until the needle moves out of the zone.
Overexposure, underexpd~ture and camera shake warnings are the same as for aperture priority AE.

Incorrect exposure

  Correct exposure

III. Match-needle Metering:

To meter the subject manually, simply disengage the shutter dial from "A." The shutter speed scale will disappear, and the aperture scale and shutter speed display will appear to the right of the field of view. Then set the shutter speed and aperture in the usual manner, matching the meter and aperture needles in the viewfinder.

IV. Stopped-down (Fixed-index) Metering

Although stopped-down AE is a much simpler and faster method of metering, you can still use fixed-index stopped-down metering. For details, see p. 39

Use of the following accessories is limited when the AE Finder FN is attached:
1. Early TS 35mm f/2.8 lenses: The~fens' shift knob will touch the finder as you rotate the lens, preventing full rotation.
2. Early Auto Bellows: The finder will touch the bellows' rear standard as you rotate the camera, making vertical shots impossible.

For details concerning modification of either accessory, please contact the nearest Canon authorized service facility.

Shutter-priority AE

When the AE Power Winder FN or AE Motor Drive FN is attached to the New Canon F-1, a choice of shutter-priority AE or manual exposure is available according to the shooting situation and your personal preference.

For shutter-priority AE, simply turn the lens' aperture ring to the "A" mark and turn the shutter dial to the desired speed. The aperture scale and the shutter spee~`which you have selected are displayed, as in match-needle metering, to the right of the field of view. The aperture needle, however, disappears from view. When you press the shutter button halfway, the meter needle will point to the aperture which the camera has selected automatically. If the meter needle points to either the over- or underexposure warning mark, simply turn the shutter dial until the needle moves away from the mark.

With both the AE Finder FN and the power winder or motor drive attached, any of the various exposure modes can be used. For aperture-priority AK, first disengage the lens' aperture ring from the "A" mark. Then set thg shutter dial to "A," and manually select an aperture. The camera will select the shutter speed automatically.

For manual exposure, make sure that both the lens' aperture ring and the shutter dial are disengaged from the "A" setting. Then set the shutter speed and aperture manually, aligning the two needles in the viewfinder in the usual way.

For further details, see the power drive's instructions.

In general, center-weighted average metering is recommended for AE photography. Please see p. 48 for further details.

Socket Covers

There are three socket covers in the baseplate of the camera. All three must be removed to attach the motor drive; for~the power winder, only two (2) and (3) must be removed. Do not remove them unless you intend to attach one of these AE power drives. Above all, NEVER remove the rewind coupler cover (1 ) when film is loaded in the camera or the film will be exposed to light.

1. Do not set both the shutter dial and the lens' aperture ring to the"A"settings.Otherwise, the lens will stop down to the smallest aperture and the camera will operate in aperture-priority AE. Depending on the lighting conditions, this may result in undesirably slow shutter speeds.
2. After removing the power winder or motor drive, do not forget to remove the lens' aperture ring from the "A" mark or the shutter will not release when you press the shutter button.
3. Before attaching the finder or motor drive, wipe the contacts with a clean, dry cloth to prevent poor contact from dirt.

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