What actually is \"flicker\"?

What actually is \"flicker\"?

• A. Exposure variation from frame to frame
• B. Color shift
• C. Thermal fluctuation
• D. Sound variation

Answer: (A)

Flicker is the light output changing over time, so the exposure varies from moment to moment as frames are captured. When a light is powered by AC or controlled by a dimming loop, its brightness can rise and fall within each cycle. If the camera’s frame rate or shutter samples different parts of that cycle, successive frames appear brighter or dimmer, creating visible flicker. That time-based variation in brightness is what this concept is getting at. Color shifts, thermal changes, or sound differences can occur alongside flicker in some systems, but flicker itself is about the rapid changes in light intensity over time, not hue, heat, or audio.

Flicker is the light output changing over time, so the exposure varies from moment to moment as frames are captured. When a light is powered by AC or controlled by a dimming loop, its brightness can rise and fall within each cycle. If the camera’s frame rate or shutter samples different parts of that cycle, successive frames appear brighter or dimmer, creating visible flicker. That time-based variation in brightness is what this concept is getting at. Color shifts, thermal changes, or sound differences can occur alongside flicker in some systems, but flicker itself is about the rapid changes in light intensity over time, not hue, heat, or audio.