In video, shutter speed is typically expressed as which of the following?

• A. as frames per second
• B. as milliseconds
• C. a fraction of a second
• D. as a percentage of frame exposure

Answer: (C)

Shutter speed describes how long the sensor is exposed for each frame. In video this exposure time is usually written as a fraction of a second, like 1/48s or 1/60s. This fractional form directly conveys the per-frame exposure and, together with the frame rate, controls motion blur—shorter fractions reduce blur, longer fractions increase it (for example, at 24fps a 1/48s exposure gives the classic 180-degree shutter look). Frames per second describes how many frames are captured each second, not how long each frame is exposed; milliseconds isn’t the standard convention, and a percentage of frame exposure isn’t used.