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.
Change one setting at a time and watch the result.
Illustrative preview. Your camera’s results will vary.
A wider opening can isolate your subject. Focus distance matters too. Fixed-distance illustration, not an optical calculation.
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.
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.