472 



DO AND DO NOT WITH ROOMS AND SCREENS [Cn. XII 



642. Summary of Chapter XII: 

 Do 



Do NOT 



1. Use a room properly 

 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). 



6. 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 

 (606). 



7. Have red lights near all 

 exits ( 607). 



8. Take the necessary pre- 

 cautions to prevent light enter- 

 ing the room at the edges of the 

 window shades ( 611). 



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. 



