Motion blur.

Follow a connection to understand how these ideas fit together.

• Factual relationship

  Shutter speed affects Motion blur

  A shorter capture time usually reduces the distance a moving subject travels in the image.

  Conditions: The subject motion and framing remain comparable under continuous illumination.

• Factual relationship

  Focus contrasts with Motion blur

  Wrong focus softens a distance region; motion blur records movement during capture.

  This comparison works in both directions.

• Factual relationship

  Motion blur contrasts with Camera shake

  A subject can move with a steady camera; a camera can move with a stationary subject.

  This comparison works in both directions.

• Factual relationship

  Panning used for Motion blur

  Following the subject during a slower capture can blur the background while reducing subject blur.

• Factual relationship

  Flash affects Motion blur

  A sufficiently short flash burst can record a moving subject sharply.

  Conditions: Flash dominates subject illumination; ambient light and flash duration are also considered.

• Factual relationship

  Neutral density filter used for Motion blur

  A longer exposure made possible by ND can deliberately show subject movement.

• Editorial next step

  Motion blur explore next Continuous autofocus

  After choosing capture time, check whether focus keeps following the subject.