corner vignetting. e amount of this extension
is dependent on both the working aperture and
the focusing distance for the lens used.
Use the following method when any kind of
lens accessory is in place and you want to en
-
sure a result free from vignetting:
1. Fit the accessory. Remove the film magazine
but do not attach a Rear Cover MultiControl
just yet.
2. Set the shutter on a CF/CFi/CFE lens at the
‘F’ position and pre-release the camera to
open both the lens shutter and the auxiliary
shutter. C/CB lens shutters should be set at ‘B’
and a B exposure made. Use a cable release to
lock the released position.
3. Look at the lens exit pupil. Use the stop-down
button and change the aperture noticing as
you do so the changes in the size of the exit
pupil.
4. Look now at an angle roughly in a line from
the exit pupil to one corner of the camera
back opening. This helps in finding the exit
pupil again when the RCMC is attached,
which can be troublesome with wide-angle
lenses in particular.
5. Attach the RCMC and observe the exit pupil
again.
6. Select the working aperture and stop down
manually.
7. Set the approximate focusing distance.
8. See the diagrams for a fuller explanation
of what you can now see through one of the
holes, and act accordingly.
In diagrams 57 A - D all exit pupils are viewed
from the image corners.
Diagram A
Exit pupil for a wide-open lens
Diagram B
Exit pupil for a vignette-free stopped down
lens
Diagram C
Exit pupil for a slightly vignetted lens (no vis
-
ible effect on the image)
Diagram D
Exit pupil for a vignetted lens (clearly visible ef
-
fect on the image)
Tripod quick-coupling S 58
e coupling plate on the bottom of the cam-
era body has both a 1/4 in. and a 3/8 in. tri
-
pod thread. It also fits the useful and reliable
Hasselblad Tripod Quick-Coupling S (45144).
This facilitates rapid and repeatedly accurate
attachment and removal of the camera from a
tripod or support.
Viewfinders 59
Certain individual requirements and appli-
cations demand more from the viewfinder
image than the conventional set up provides.
Magnif ying hoods and focusing hoods are
available as well as a range of prism view
-
finders, including advanced TTL metering
models.
20
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