Two clips recorded at the same frame rate can show movement differently. One may have crisp individual frames; the other may show more blur within each frame. Shutter speed helps explain the difference.
Sony’s movie-shooting guidance distinguishes frame rate and shutter settings and discusses a common shutter guideline. A setting near twice the frame-rate number is a creative starting point, not a rule every video must obey.
Compare one moving subject under steady conditions
For a small original test, record a hand moving across a plain background at one chosen frame rate. Make a second clip with a shorter exposure, adjusting the rest of the exposure as needed. Compare moving playback and paused frames. Keep the action and framing similar so the comparison has a clear purpose.
Frame rate describes how many frames are recorded in a second. Shutter time describes how long each frame gathers light. Changing the latter does not add extra frames; it changes the appearance of movement captured within them.
Write down both settings with each clip. “Shot at 25 frames per second” is incomplete information if you are trying to reproduce its motion appearance. Lighting, exposure, subject speed, and camera movement also influence the result.
Check for flicker under the actual lights, especially when departing from familiar settings. A technically possible exposure is not automatically suitable for every lighting system. Test before recording an interview or performance that cannot be repeated.
Choose based on the intended image: readable movement in a demonstration, a particular action style, or continuity with other shots. Understanding the controls gives you a reason for the choice instead of copying a number without knowing what it changes.