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Beam Calculator
Target Height
Choose a fixture type
Altman 4.5x6
Altman 6x9
Altman 6x12
Altman 6x16
Altman 6x22
ETC 405
ETC 410
ETC 419
ETC 426
ETC 436
ETC 450
Strand 10x23
Strand 8x13
Strand 6x16
Strand 6x12
Strand 6x9
Strand 4.5x6
Beam Angle
Height of Fixture
Fixture Distance
Beam Spread
Fixture Throw
Incidence Angle
Oval Depth
Oval Width
Shadow Length
Notes
: All distances are Feet'Inches. Feet are separated from inches with a " ' ". Do NOT use inch marks. All fixture angles are FIELD angle. Data for fixtures from manufacturer data sheets and
The Photometrics Handbook
by Robert Mumm(published by
Broadway Press
).
Inches
Centimeters
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Formulae used on this page
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