47*
DO AND DO NOT WITH ROOMS AN D SCREEN’S [Ch. XII
§ 642. Summary at Chapter XII :
Do
1. Use a room property
equipped for projection if good
results are expected <§ 602).
2. Use light-absorbing tints
for tinting and decorating the
projection room !§ 604).
3. Make all paints dull or
flat, never shiny, for a projec¬
tion room.
4. Light the projection room
sufficiently, so that the specta¬
tors can find their seats without
trouble (§ 605).
5. A perfectly darkened room
is only necessary for special
projection (§ 608).
0. Lamps for general lighting
should be shaded or so arranged
that their light cannot shine
directly in the eyes of the spec¬
tators or upon the image screen
t§ Ooöh
7. Have red lights near all
exits t§ 607).
8. Take the necessary pre¬
cautions to prevent light enter¬
ing the rxxmi at the edges of the
window shades (§ 611).
Do Not
1. Do not expect good pro¬
jection in a room not equipped
for it.
2. Do not use light-reflecting
colors like yellow, white, light
red or green for decorating
the projection room; but the
dark. rich, light-absorbing col¬
ors. dark red, brown, etc.
3. Do not use paint that gives
a shiny or enamel surface, for
this will produce a glare by the
reflections. Use flat paint.
4. Do not have the projection
room darker than necessary.
5. Do not attempt the most
difficult projection unless the
room can be made perfectly
black.
6. Do not use unshaded
lamps for the general lighting.
Light shining directly in the
eyes of the spectators is very
distressing.
7. Do not fail to have red
lights by the exits.
8. Do not leave the window
shades without protection at the
margins.