Aperture • physical light
A lower f-number lets in more light at the same shutter duration. At 14mm, this lens can open to f/4.
Separate how often you capture from how long each frame sees the world.
Near 180°: a familiar amount of motion blur. This is a starting guideline, not a requirement. Playback 25 FPS / capture 25 FPS = 1.00× speed. Trail is illustrative.
Animation illustrates speed and blur. It does not simulate discrete captured frames, rolling shutter or your display refresh rate.
Shutter angle = exposure duration × capture FPS × 360°. Your current angle is 180°. Near 180°: a familiar amount of motion blur. This is a starting guideline, not a requirement. Capture rate affects temporal sampling, shutter duration affects blur within each frame, and playback rate controls speed.
A lower f-number lets in more light at the same shutter duration. At 14mm, this lens can open to f/4.
Each frame collects light for 1/50 second. A longer exposure collects more light and more movement.
ISO 400 changes output brightness, not incoming light. With little captured light, noise can become easier to see.