closed fully. This is especially important at shut-
ter speeds from 1s to 1/4s, as the auxiliary shut-
ter remains open only when the button is kept
depressed (see also ‘Warning Mark’ below).
If you remove the magazine, you can see the
auxiliary shutter, consisting of two blinds, cov-
ering the rear opening of the camera body. It
protects the film from unwanted exposure as
the lens’ shutter normally is open for focusing.
Warning mark
34
You will find an orangeline on the shutter speed
scale above the 1, 1/2, and 1/4s settings. This is
to warn you of possible exposure errors as de-
tailed above. The auxiliary shutter will termi-
nate the exposure prematurely if you relax the
pressure on the button too soon.
Listen to the buzzing sound of the delay escape-
ment in the lens’ shutter and maintain the pres-
sure on the release button until the sound stops.
Exposure values
35
The aperture and shutter speed combination set
opposite the central lens index determines the
exposure. Every combination of shutter speed/
aperture has an equivalent exposure value (EV)
which you can read and set against the red EV
index on the right hand side of the lens.
Interlocked shutter speed / aperture 36
If you want to change the shutter speed or aper-
ture while still keeping the same shutter speed/
aperture combination (EV), you can interlock
the speed and aperture setting rings by hold-
ing down the interlock button which is on the
right of the aperture scale. When interlocked,
the rings move together, increasing or decreas-
ing the aperture to compensate for a decrease
or increase of speed respectively.
Focusing and depth of field
37
The focusing ring is closest to the camera body.
It has a knurled rubber grip and engraved dis-
tance scales in feet and metres. Focus the lens
by rotating the focusing ring until you obtain a
sharp image of the subject in the viewfinder.
The distance between the subject and the film
plane is read off the focusing ring’s distance
scale opposite the central lens index.
Objects closer or further away than the selected
distance will be sharp, within certain limits.
The limits of this field of sharp focus - depth of
field - vary with the aperture.
The depth of field available at any given aper-
ture can be read off the depth of field scale on
both sides of the central index. As an example,
the illustration indicates how to read the depth
of field scale at an aperture of f /11. The depth of
field will in this case range from ca 4.3 metres
to ca 20 metres.
Depth of field preview
38
Depth-of-field can be visually checked on the
focusing screen. The diaphragm can be stopped
down to the preset aperture from its normal-
ly wide open position simply by pushing the
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