BLUE
SENSITIVE FILM STOCK
[Film Technology]
Most printing stock and duplicating
stocks for use in the laboratories,
however, are still manufactured to be blue sensitive only. They have the advantage of being safe to
handle under certain safe light conditions, and
since they are use only for printing from a black and
white film, there spectral sensitivity is unimportant to image formation.
See panchromatic also. A yellow flower is too dark on blue sensitive
film. Many colours as darker than they
should be. A red flower pot appear too
dark on blue sensitive film. Because monochrome print cost were always less than colour,
the custom developed of using black and white work
print for editing. As they are usually
made on blue sensitive stock-(i.e. intensities
to red) there is risk of any edge fogging going
unnoticed until finally seen in the colour show print.
e-mail : pratheepvasudev@gmail.com
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