Zoom creep

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Zoom creep is a phenomenon in zoom lenses where the angle of view of the lens changes when gravity is allowed to freely act on it. [1] If the lens has a zoom ring, holding it when the lens is held upwards or downwards will prevent this change. In lenses with push-pull zoom, creep is prevented by holding the extending part of the lens. Some lenses, such as the Tamron SP AF 17-50mm f/2.8 XR Di II LD Aspherical [IF] [2] and Canon EF-S 18-135mm f/3.5-5.6 IS STM, [3] have a zoom lock to stop the effect.

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References

  1. "Nikon Support".
  2. "SP AF 17-50mm F/2.8 XR di II LD Aspherical [IF]". 3 April 2020.
  3. "Canon U.S.A., Inc. | EF-S 18-135mm f/3.5-5.6 IS STM".