WATCHING METER IN VIEWFINDER
Correct Exposure Range:
The stopping of the Meter Needle #2 within the range of correct exposure (or somewhere on the f-
number scale for the used lens) is an indication of the feasibility of taking pictures under the Electric-Eye system. Here, the
meter needle shows the aperture to which the taking lens is to be set for a shot.
Warning Marks and Mark for the Indication of Fnumber at the Full Opening of the Lens:
The red mark visible on the top
of the f-number scale visible in the field of view is a mark for the warning of underexposure for an f/1.2 lens. If the lens is not f/
1.2 in brightness, the Mark for the Indication of the F-Number at the Full Lens Opening (43) will show the f-number at the full
opening of the taking lens. If the meter needle is aligned with this mark, pictures will be under-exposed. The signal placed at the
bottom of the f-number scale is a warning mark for over-exposure. If the meter needle is brought in line with this Over-exposure
Warning Mark 40, it will be impossible to secure a correct exposure.
Index Point for Stopped-Down Aperture Measurement :
When the lens is stopped down for the measurement of light the meter needle will be aligned with the Index Point 39, if a
combination of shutter speed and lens aperture which assures correct exposure for the film used in the camera comes out.
Manual Aperture Indicator Mark: "M", the Manual Aperture Indicator Mark 44,, indicates the non-alignment of the Electric Eye
Mark
I~
of the Aperture Ring 12 with the index mark for a fully automatic aperture (Electric-eye) lens. When the camera is not
used under the Electric-eye system, the alphabet "M" is visible at all times, indicating that the aperture of the lens may be
manually operated. This manual was created by www.butkus.org/chinon and should only be found at my site.
LIGHT MEASUREMENT AT FULL LENS OPENING
ELECTRIC-EYE PHOTOGRAPHY
(Light Measurement at Full Lens Opening)
In the event that a lens equipped with a fully automatic aperture under the Electric-Eye system and having an Electric-Eye mark,
pictures may be taken under the Electric-Eye system while light is measured at the full opening of the lens and the viewfinder is
brightened as a result of its full opening.