Iris
An Iris is a mechanical device used in theatrical and stage lighting to control the size of the light beam. Think of it like the pupil of an eye that can become larger or smaller. When lighting designers mention an Iris in their resume, they're referring to their experience with adjusting the circular opening that makes light beams wider or narrower. This is an important tool in theater, concert, and event lighting because it helps create precise lighting effects without moving the actual light fixture. You might also see it called a "beam reducer" or "mechanical dimmer" in some contexts.
Examples in Resumes
Designed lighting sequences using Iris controls for Broadway-style productions
Maintained and repaired Iris units on moving lights for concert tours
Programmed Iris effects for dramatic scene transitions in theatrical performances
Typical job title: "Lighting Technicians"
Also try searching for:
Where to Find Lighting Technicians
Professional Organizations
Online Communities
Job Resources
Example Interview Questions
Senior Level Questions
Q: How would you train junior technicians on proper iris maintenance and troubleshooting?
Expected Answer: A senior technician should discuss creating maintenance schedules, demonstrating cleaning procedures, explaining common issues like sticking or uneven movement, and emphasizing safety protocols when working with lighting equipment.
Q: Describe a complex lighting design where iris control was crucial to the show's success.
Expected Answer: They should be able to explain a specific production example, including how they used iris effects to achieve certain looks, how they programmed these effects, and how they coordinated with the overall production design.
Mid Level Questions
Q: What maintenance procedures do you follow for iris mechanisms?
Expected Answer: Should describe regular cleaning, lubrication requirements, checking for smooth operation, and basic troubleshooting steps when issues arise.
Q: How do you program iris movements into a lighting console?
Expected Answer: Should explain basic programming concepts, timing considerations, and how to create smooth iris movements that enhance the performance.
Junior Level Questions
Q: What safety precautions do you take when working with iris units?
Expected Answer: Should mention basic safety procedures like ensuring power is off during maintenance, proper handling techniques, and when to seek help from senior technicians.
Q: Can you explain the basic function of an iris in a lighting fixture?
Expected Answer: Should be able to describe how an iris controls beam size and its basic mechanical operation in simple terms.
Experience Level Indicators
Junior (0-2 years)
- Basic iris operation and maintenance
- Understanding of light beam control
- Following established cue sheets
- Basic safety procedures
Mid (2-5 years)
- Programming iris movements
- Troubleshooting common problems
- Maintenance and repair
- Creating lighting effects
Senior (5+ years)
- Advanced programming techniques
- Training and supervision
- Complex show design
- Equipment specification and purchasing
Red Flags to Watch For
- No hands-on experience with lighting equipment
- Lack of basic safety knowledge
- Unable to explain iris maintenance procedures
- No experience with lighting control systems
Related Terms
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