How to 'bench focus' a Source Four ERS
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ETC Source Four Leko: A Cinematographer Must Have Light!
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Bobblehead Fred Shorts: Cleaning a Source Four
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Changing PAR Lenses
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Using GOBOs on Stage
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How to use Film Lights: HMI Lights
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ETC Introduces The Source 4 Mini
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ETC Source 4WRD Color
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