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Where no factors are quoted, the following
data will
serve as
a starting
point for
panchromatic materials.
Light yellow filter
Medium yellow filter
Yellow-green filter
Orange-red filter
No.1:
No.
2:
No. 71:
No.
7
:
Factor 1.5
- 2
X
Factor 1.8
-
2.3
X
Factor 2
-
2.5
X
Factor 4
X
Ask
your photo dealer lor
Agio Filters
in
the
modern
transparent
screw tap cases, and lor the efficient
lens-hoods which can also be used together with the filters.
33
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