situation. But we managed to keep the light on the audience to under 10 footcandles. (See Figure 1). Another technique used in film was widely employed. The French Flag or "cutter" (Figure 7) is a mask that can be attached to the yoke and positioned in front of the light to act as a barndoor. (Figure 8) Because the normal four-leaf barndoor has a fixed attitude, other angles cannot be created without changing the angl e relationship of all four doors equally. More often than not, the ability to position each barndoor separately is needed. For example, because the backlight was pointing downstage, the normal barndoor gave a light pattern of an inverted triangle, splaying light into the seats at the opposite end of the house. Two French Flags were used, one on each side of the instrument, plus the regular barndoors for top and bottom cut-off (Figure 9). By maneuvering the flags, we were able to get a straight line down the side row of seats. Figure 8 The effect of the French Flags on the backlights is to effectively prevent light from splaying into the seating area. Figure 9 General view of lighting instruments. 24 The only lighting area that would have required an ellipsoidal spotlight was at the aisle exit. Only the downstage left exit was used by actors, and the door at the end of the aisle was part of the set. The area was Iighted with two Vari-10s and two French Flags were used in much the same way as those employed on the backl ight problem. (Continued on page 31) ~ THEATER DESIGN AND TECHNOLOGY FEBRUARY. 1971