Hightower196

Distance about 900 meters OOC 560mm f/8 1/240s (try this without OIS !) ISO800
 

 
 

Weather was perfect yesterday so I had a short photo walk with family and time to test lens outside (all pics with TC 1.4 of course ;-) ...
 
Distance about 30 meters OOC 380mm f/7.1 1/800s ISO800
 

 
 
 

For it to be an issue, there has to be proof that it actually is an issue. Otherwise I can call any lens on the market faulty and just say "Absence of proof is no proof of absence."
 
I myself called Fujifilm Germany when I got the 50-140 to make sure it is a non-issue. I'm terribly sorry I cannot provide an mp3 file of the call...

I have noticed the same rattle/clunk noise in my 90... the same noise the 50-140 makes when it is not on the camera. Both lenses make incredibly sharp images when on the camera and Fuji says the noise is normal behavior. As long as the image quality continues to be so outstanding, I'm not going to worry. 
 
As a long time professional photographer who has used Canon for the better part of the last 25 years and has suffered through numerous QC issues, 1D variant body focus issues, weather sealing issues, lenses that were back/front focused on one side and not the other,  repeated IS motor failure issues, just to name a few, I have been very pleased with the high quality of the Fuji bodies (X-T1's) and the glass and how well they work right out of the box. 
 
As far as reviewers "warning" readers about the noise, if it how the lens is supposed to operate and does not compromise image quality, there wouldn't seem to be a need to warn anyone. 
 
I am really loving the 90... clunk and all.

So much nonsense being written here...
 
Whether the lens rattles or not just simply doesn't matter up to the point where there is proof that the rattling causes wear and tear inside the lens. There is not a single proof for that, so all you people do is rant about... nothing.
 
There shouldn't be any dust inside the lens and the lens should work just as intended. As long as it does just that, the rattling might just be a nuisance for SOME people and a non-issue for most.
 
The biggest problem is that people think their lens is broken/faulty due to the rattling. But it's normal and calming down should be advised at this stage.

I wrote already about my opinion in another post - so here's the link ... ;-) 
http://www.fuji-x-forum.com/topic/681-xf-90mm-now-shipping-at-bhphoto-“sharper-than-japanese-steel-…-it-will-leave-the-most-pedantic-pixel-peepers-speechless”-review-at-bokeh-monster/