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Mamiya C330S: Page 35
Accessories (cont.) 35
(1) CdS Magnifying Hood
This is a spot metering finder
with a CdS exposure meter
incorporated in the
magnifying hood. Since the
meter measures light which
passes through the lens, the
correct exposure setting is
easily obtained. A
compensating exposure factor
need not be considered even
if the bellows is extended.
When employing a color
filter, however, compensating
exposure must be made by
considering the filter
exposure factor. (By
attaching the same color filter
to the viewing lens, such
compensation is
unnecessary.)
(2) Prism Finder
As with the magnifying hood,
this prism finder may be used
instead of the focusing hood.
Through this prism finder, the
image on the ground glass
focusing screen appears
exactly as the subject is seen.
Really an indispensable
accessory for eye-level photo-
journal photos or candid
shots.
Magnification of this finder is
approximately 2.5 times the
image on the ground glass
focusing screen, particularly
bright and clear.
(3) CdS Porrofinder
This is a Porrofinder with built-
in CdS exposure meter. Match
the index needles within the
finder by turning the dial on the
back of the finder, and read the
dial scale. This device measures
the amount of light traveling
through the viewing lens,
offering correct exposure setting
even for amateurs.
Eye Correction Lens
This lens, designed to correct
visibility, is installed inside the
eyepiece ring of the CdS
Porrofinder, or Prism Finder.
Nine types of lenses are
provided from +2.5 to -2 diopter
(each diopter is +2.5, +2.0, +1.5,
+ 1.0, +0.5, -0.5, -1.0, -1.5, and -
2.0).
When installing the lens on the
finder, hold the milled portion of
the eyepiece ring with the thumb
and finger, and turn it
counterclockwise to remove the
ring. When the lens is a plus
(convex) lens, position it with
the flat surface outside, and
when it is a minus (concave)
lens, place the concave surface
on the exterior, then screw the
ring into its original position.
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