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I got a newsletter which includes this picture

enter image description here

and I was wondering how the effect on the clock is achieved in photoshop.

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Spin Blur

In Photoshop (Photoshop CC 2014) it can be found in:

Filter > Blur Gallery > Spin Blur

You can find more info in Adobe Photoshop documentation.

  • on old versions of PS it is named Radial blur – Romeo Ninov Dec 23 '14 at 13:36
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    Radial Blur exists in newer versions too. Spin Blur is just Radial Blur set to spin and applied with a control widget. – ElendilTheTall Dec 23 '14 at 13:43
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It's just the Radial Blur filter. However, if the idea is to replicate a slow shutter speed blurring the motion of the hands, it's poorly executed, because the entire clock face is blurred. Only the hands move, so only the hands should be blurred.

  • Radial blur goes outwards from a central point. This is spin blur, as the blur is going around the central point (the clock hands) – laurencemadill Dec 31 '14 at 9:40
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    Radial blur has two modes, Zoom and Spin. The spin mode is exactly the same as Spin Blur, it just doesn't have the adjustment handles. – ElendilTheTall Dec 31 '14 at 12:16
  • ah ok, I hadn't realised that, I was using 'radial' with its more mathematical meaning obviously :) – laurencemadill Dec 31 '14 at 14:00

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