303.24
by increasing the distance between the safelight and the
material. Safelight filters are covered in chapter 3.
A safelight is most efficient when its output of
angle to the sensitized material. Figure 10-2 shows
safelights used in photographic darkrooms.
illumination is indirect or reflected. When the safelight
is not constructed on the indirect principle, it should
never be pointed directly at the sensitized material; it
should be placed so the light beam is away from or at an
SHEET FILM HANGERS
Sheet film hangers are made of stainless steel or
plastic that resist corrosion in photographic solutions
10-11

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