a Doom

two pole, double throw dead front switches, will make it possible to burn these
Photoflood bulbs at half voltage during practice periods and between halves to pro=-
long the life of the bulbs. The average burning life--at full line voltage--of
these flood bulbs is «bout ton hours.

These #4 Photoflood bulbs will give a Watt output of 2500--500 Watts more
then the regular 2000 Wett Mazdas. This extra candle power source may enable the
cameraman to use semi-slow motion film speed of 4 franes /second or even 32 frames /
second for better coaching enalysise

The reflectors should be twenty feet from the floor to the bulb. They may
pe placed at 25' height but the light loss from this extra 5* is not desirable. If
the reflectors are 18", as they are in the Western Reserve gymnasium, heavy duty
guards should be used over them. There will be «= a ee from the use of
these guards. At the 20° height, the reflectors will not interfere with the aver~
age shots at the basket.

With baske thall floor illumim tion of this type, we have been able to "shoot™
coaching films very satisfactorily at the normal or 16 frane s/second camera speed.
The lenses we use are the 1", f 1.9 in focusing mount. I say “lenses" for we have
some times used more than one camera to cover & gamee

The lights should be in three rows of five each along the length of the
floor. The string that runs along the side lines should be in from the boundary
lines from 8 to 10 feet, (Pig. l--1-2-5-4-5, 11-12-13-14-15) and spacec as nearly
to 15" apart as is possible, starting with the ones in the center of the lines.
However, the lights in the corners, that is, those closest to the end boundaries,
should be ten feet from the side and end lines. {Fige J--1-5-11-15). One reflector
should be directly over the center ring (#8), with one on either side ina mid-line
15' toward each end (lights 7-9), One light should be placed over each basket
area just above the inside end of the foul lanes. (lights #6-10). These will not
interfere with the players when attempt ing foul shots or “free throws".

This light placement will give enough overlap of illumination so that there
will be no Gistracting floor shadows from the players. The outside “spilil™ of

light will inelude a short photographic distance beyond the boundary lines. We