Faulty 90mm?

[CharlesG]

Hello Everyone,

Question for you. I just bought a used Fujinon XF 90mm f/2 online. I just received it and I am concerned about what seems to be a loose piece inside the lens. When you rotate the lens top to bottom it thumps as something inside shifts. Now, I am fairly new to photography and this is only my third lens, so perhaps this is just not something I have encountered to this point. Is this standard for this lens or has it been damaged? The lens seems to work just fine on the camera, just fyi. Thanks!

[Greybeard]

This seems to be normal - I believe its because of the linear motor - try putting the lens on the camera and turning the camera on so that the motor is activated - the sound should go away.

[Trentside]

Hi

As Greybeard has commented, I am sure that this is normal.  I have the 80mm macro lens which also has a linear motor and, when the camera is switched off or the lens is removed, it exhibits the same symptoms you describe.  Once switched on the internal mechanism engages the 'floating lens group' and the 'clunking' disappears. The 50-140mm zoom is similar although perhaps not so obvious. I hope that this helps.

[Edp]

Normal for linear motor fuji lenses. This may make you feel better.....

 

https://youtu.be/cXGkdmAdU70

 

 

or look at this, and head to 00:13
 

 

Edited April 5, 2023 by Edp