Fuji 18-55 acoustic noise
So I've got a X-T1 with 18-55 and lens makes strange noise (literally noise, acoustic one) - not very loud, so I noticed it only after two weeks of usage when I turned it on late evening - it goes "sshhhhhh". Even if it's on manual focus, with manual aperture and image stabilization turned off. I went to a shop and tried two other 18-55 and one 50-230 and all of them made the sound. 18/2 didn't make the sound.
I wonder if anybody else experienced that? Can you hear it? You don't need to focus or do anything at all, just turn your camera (with a lens, hehe) on and put the lens close to your ear and you should hear it.
I never heard that before (not from my previous camera/lens, and not from friends' cameras), so I'm a bit worried.