XF50-140 loses connection to x-t1 body

[cyman_de]

hi, got a XF50-140 and after a couple of days i noticed that the lens loses the connection to my x-t1 body during shooting. the x-mount bayonet got some rotating lash but this seems to be normal, after some search at google. but at a specific position during shooting / rotation the lens loses the connection. it's kind of a short blackout. my xf23 works great, now issues and the x-mount bayonet is tighter then on the xf50-140. strange...

 

so i get in touch with the local fuji support and send it warranty repair. after 3 weeks i got it back ... they replaced the board /mainboard of my x-t1, the lens is fine they said. but i noticed one week ago the same issue. and yes, i will send it again to fuji support to fix it.  i asked some of my friends (nikon, canon shooters) with 70-280 lenses and they never noticed this kind of issue.

 

my question is: do others recognized this kind of issue? what it may be? it still believe that the x-mount bayonet of the xf50-140 is the reason. would be thankful for any hints.

 

best regards

simon

[frod]

I had am issue like this on a nikon 70-300. Hama make a glass fibre contact cleaning pen which worked for me then.

[JaapD]

I also have a X-T1 and a 50-140mm, amongst other stuff. Everything works flawlessly, zero problems with all my Fuji cameras and lenses.

[Vidalgo]

glass fibre contact cleaning pen

It's intended for removing of strong oxidation layer from contacts, but almost useless for gold plated contacts because no oxidation there.

Better to use cotton swab wetted with lab-grade ethanol/propanol/isopropanol, for removing possible dirt and oils.