Motion Blurring

Motion blurring is another type of shutter speed-dependent image blurring. Here the moving object is blurred in the image despite exact focusing. The cause for this, in relation to shutter speed, is the object’s speed of movement.


Object is blurred in the image despite exact focusing

Tips and rules for photographing moving objects

  • A faster shutter speed must be achieved
  • Increase diaphragm diameter (results in a smaller f-number)
  • Increase ISO rate 
  • Use the flash (the fastest shutter speed using the camera’s flash sync speed is already given e.g. 1/200 or 1/250 - if the amount of time is insufficient, some makes allow you to use a fast speed synchronisation. However, it reduces the flash’s range considerably)

Not every “out-of-focus“ image is a failed photo – quite the opposite. Motion blurring is often used in photography specifically to illustrate the dynamic of an image. There are different types of motion blurring:

  • Flash-drag effect
  • Wipe effect
  • Zoom effect
    • Zooming (changing of focal length) over the period of exposure

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