Lens Mounting Flange - Nikon EM Owner's Manual

Nikon EM
Notes: 1. Do not push the film rewind button before all the frames are exposed; otherwise, there
will be a slight frame overlap. If the button is inadvertently depressed make a blank exposure in a
dark place.
2. When carrying the camera, it is recommended that you reset the shutter
operation mode selector ❷ from AUTO to B to prevent battery power
drainage caused by the shutter release button being inadvertently
depressed.
Q: What should I do if I make the mistake of opening the camera back before the film is fully
rewound?
A: Quickly snap the camera back closed. You may be able to save a few frames, but this is not
guaranteed, especially if the back is opened in bright light.
VI. Technical Details and Other Information
A. Exposure Measurement
The Nikon EM's built-in exposure meter uses
Nikon's through-the-lens (TTL) center-weighted
exposure metering system. The meter "reads" the
light over the entire focusing screen, but favors the
central 12mm-diameter area outlined on the
screen. This is where the main subject is likely to
be positioned, and allows the photographer to
make precise exposure readings of the selected
subject area, as well as provides for overall
balanced exposures.
B. Shutter Operation Mode Selection
The shutter operation mode selector has two
mechanical override settings. M90 provides a
shutter speed of 1/90 sec., it is also used for flash
photography with an electronic flash unit other
than the Nikon SB-E or SB-10. B is for long
exposures — the shutter curtains remain open for
as long as the shutter release button ❸ is kept
depressed. A tripod is essential for B exposures.
C. Film Plane Indicator
This is mainly used in close-up photography to
determine the exact subject-to-film plane distance.
It is visible when the film winding lever ❺ is
pulled out, and positioned precisely on the film
plane — 46.5 mm from the front surface of the
lens mounting flange ⓫.
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Owner's manual