Kodak RETINA IIIC

The film indexes for co lor films, assigned by the
manufacturer, can be used with meters marked
for ASA Indexes. Howevel", it may be desirable to
modify this index to get the result you want for
the condition under which you will use the picture.
For example, a transparency projected with a
high-wattage projector on a small screen requires
less exposure than when shown with a low-watt-
age projector on a large screen.
If you have taken pictures before, be guided by
past experience. Note the reading provided by the
meter and, if necessary, adjust the index.
With color film it may be worth while to take a
few pictures of a typical sunlit outdoor subject,
with the sun in back of you, for test purposes. One
picture should be at the setting indicated by the
exposure meter and the others one exposure-value
number more and one exposure value less. From
the results, when projected, you can tell readily
whether you shou ld use the setti ng suggested by
the film manufacturer or a higher or a lower one.
Another approach to getting the kind of pictures
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