Which component is a circular disk that rotates with each frame?

Which component is a circular disk that rotates with each frame?

• A. Shutter
• B. Film Loop
• C. Gate
• D. Cement Splicer

Answer: (A)

In a motion picture camera, controlling when light reaches the film is essential, and that control is provided by a rotating shutter. This component is a circular disk that spins as each frame is captured. It usually has a narrow opening or slit, and as the disk turns, this opening passes in front of the film gate so light can expose the frame only for a brief, precise moment. The speed of the rotation, relative to the frame rate, sets how long the exposure lasts for each frame (the shutter angle concept). This brief, synchronized rotation gives a consistent look and motion blur across frames. The other parts don’t fit this role. The film loop is the length of film moving through the camera’s path and doesn’t rotate with each frame. The gate is simply the opening where the film sits during exposure. A cement splicer is a tool used to join film segments during editing, not a part of the camera mechanism.

In a motion picture camera, controlling when light reaches the film is essential, and that control is provided by a rotating shutter. This component is a circular disk that spins as each frame is captured. It usually has a narrow opening or slit, and as the disk turns, this opening passes in front of the film gate so light can expose the frame only for a brief, precise moment. The speed of the rotation, relative to the frame rate, sets how long the exposure lasts for each frame (the shutter angle concept). This brief, synchronized rotation gives a consistent look and motion blur across frames.

The other parts don’t fit this role. The film loop is the length of film moving through the camera’s path and doesn’t rotate with each frame. The gate is simply the opening where the film sits during exposure. A cement splicer is a tool used to join film segments during editing, not a part of the camera mechanism.