1. What is Shutter Angle?

Shutter angle is a measurement used in filmmaking to describe the exposure time of each frame. It originates from rotary disc shutters in film cameras where the angle of the opening determines how long each frame is exposed to light.

2. How Does the Calculator Work?

The calculator uses the shutter angle formula:

Where:

• \( \text{shutter\_speed} \) — Exposure time per frame in seconds
• \( \text{frame\_rate} \) — Frames per second (fps)
• 360 — Constant representing full rotation in degrees

Explanation: The formula converts shutter speed (time-based) to shutter angle (rotation-based) for a given frame rate.

3. Importance of Shutter Angle

Details: Shutter angle affects motion blur in video. A 180° shutter angle is considered standard, producing natural-looking motion blur. Different angles create different aesthetic effects.

4. Using the Calculator

Tips: Enter shutter speed in seconds and frame rate in fps. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the standard shutter angle?
A: 180° is standard, meaning the shutter speed is half the frame interval (e.g., 1/48s at 24fps).

Q2: How does shutter angle affect motion blur?
A: Larger angles (longer exposure) create more motion blur, smaller angles (shorter exposure) create sharper motion.

Q3: Why use shutter angle instead of shutter speed?
A: Shutter angle maintains consistent motion blur when changing frame rates, as it's relative to the frame rate.

Q4: What's the relationship between angle and speed?
A: Shutter speed = (shutter angle/360) × (1/frame rate). At 180° and 24fps, shutter speed is 1/48s.

Q5: Can I use this for digital cameras?
A: Yes, even though digital cameras don't have physical shutters, the concept is used to maintain consistent motion blur aesthetics.