October 12, 2012 Warm Up: What is the magic number when you do your scribble plot (what we did last class)? How do you figure it? How is it used? Objective: Students will understand how different lights perform on stage and create instrument schedules for their sample lighting plot.
Quick Review • Scribble Plot: rough, sort of messy lighting plot where you plan the placement of your lights. • Acting Area: controllable are of stage identified by front, spot lights. Usually 8’-12’ • Overlap: the amount that acting areas overlap in order to remove shadows. • Magic Number:
How different types of lights work… • Spotlights – sharply focused, define area, gobos, ERS (ellipsoidal reflector spotlight) • Fill Lights – color wash, atmosphere, soft, unfocused • LED based lights – can be made as an ERS replacement or fill light, lower power, longer life. • Moving lights – new wave of computer controlled LED based systems
Spotlights / ERS -Creates hard, well defined circles of light on stage -Gobos or patterns can be used to create texture or images on stage -used as a front light or a special effect (gobos) -Shutters allow for “cutting” of light on stage -Different lenses do different things with the light.
ETC SourceFour • http://www.etcconnect.com/minisite/sourcefour/index.html • Measures the beam angle in degrees. • To figure out which one to use, you have to do some math (Pythagorean's theorem) • 19 degree: .26 • 26 degree: .32 • 36 degree: .47
Unfocused lights • Fresnels use a special lens to create wide floods of light • Barn doors can be used to cut excess light • Excellent for use as fill lights and floods • Can be made in excess of 10,000 watts • PAR Fixtures are similar in style and construction to a car head light. • Narrower than a Fresnel • Smaller flood, atmosphere, “tube of light”
Fresnel and PAR A fresnel lens is a cut away pattern to spread light as widely as possible. The pattern makes the light very soft and non directional. A PAR is used often in concerts for this kind of look, “tube of light” Newer PAR fixtures can do many other things, and often have replaced traditional fresnels.
High Tech Lighting • LED – Light Emitting Diodes use a TON less power, burn MUCH cooler, and last MUCH longer. • Not as bright as traditional theatre lights • Still more expensive initially (or insanely expensive) • Can run on regular power, no dimmers required. • Must use an expensive computerized light board to control • TONS of flexibility
Instrument Schedule • A chart that shows where lights are hung and what they do. • Organized by electric and instrument number
Assignment • Finish your base 2 point lighting plot from last class.(name areas, number lights) • Choose specials, additional lights • Create an instrument schedule for your sample plot • Colors next week because I need more color books!