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Fresnel spotlight

Graphic depiction of a single line set and the parts of a counterweight system. (A) Hoisting cables, (B) Turnbuckles, (C) Purchase line, (D) Arbor rod, (E) Spreader plates, (F) Cut steel counterweight, (G) Locking safety ring, (H) Rope stop/lock (brake)/Lock rail, (I) Tension sheave (block).

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Fresnel spotlight

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  1. Graphic depiction of a single line set and the parts of a counterweight system. (A) Hoisting cables, (B) Turnbuckles, (C) Purchase line, (D) Arbor rod, (E) Spreader plates, (F) Cut steel counterweight, (G) Locking safety ring, (H) Rope stop/lock (brake)/Lock rail, (I) Tension sheave (block)

  2. Fresnel spotlight

  3. ellipsoidal spotlight

  4. cyc(lorama) strip lights

  5. Types of Lamps • Incandescent will change color temp with age • Quartz Halogen maintains stable color temp • HID – halide iodide discharge • HMI – hydragyrum medium arc-length iodide

  6. Color Temperatures 1700 K Match flame 1850 K Candle flame 2800–3300 K Incandescent light bulb 3350 K Studio "CP" light 3400 K Studio lamps, photofloods, etc. 4100 K Moonlight, xenon arc lamp 5000 K Horizon daylight 5500–6000 K Typical daylight, electronic flash 6500 K Noon daylight 9300 K CRT screen

  7. Colors • Physical Primary Colors • Red • Yellow • Blue • Physiological Primary Colors • Red • Blue • Green

  8. Controllable Qualities of Lighting • Intensity • Color • Distribution • Movement

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