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next PZ lens test report: Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR
#14
I guess it relates to the linear AF motor.

I'm not sure about the 100-400mm but the 90mm "rattles" when shaking. If you switch on the camera, the rattling is gone which probably means that the magnets are activated and the AF group is then "hovering" in its channel (which explains the fast AF).

 

That's my theory at least ;-)

  


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next PZ lens test report: Fujinon XF 100-400mm f/4.5-5.6 R LM OIS WR - by Klaus - 09-01-2016, 01:33 AM

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