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Internal Glass Movement in XF 16-55mm Lens Is Normal?

Started Jul 4, 2015 | Questions
BisonOz
BisonOz Forum Member • Posts: 96
Internal Glass Movement in XF 16-55mm Lens Is Normal?

I haven't really noticed it before but the second glass inside (starting from the mount-side) is moving freely when I tilt the lens unmounted.  It focuses fine and zoom is good. However, the LCD/Viewfinder will flicker if I turn the zoom ring while trying to focus. Is this normal? I fear that my 2 year old son might have damaged it when he got in my camera bag. I recently updated my X-T1 to v4.0 as well so I can't remember it happening before (firmware bug??). Any help is appreciated!

Todd

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Leica Q2 Canon EOS R5 Canon EOS R3 Leica M11 Canon EOS R5 C +10 more
ANSWER:
Fujifilm 16-55mm F2.8R LM WR Fujifilm X-T1
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memaddock
memaddock Junior Member • Posts: 25
Re: Internal Glass Movement in XF 16-55mm Lens Is Normal?
1

jtosbo00 wrote:

I haven't really noticed it before but the second glass inside (starting from the mount-side) is moving freely when I tilt the lens unmounted. It focuses fine and zoom is good. However, the LCD/Viewfinder will flicker if I turn the zoom ring while trying to focus. Is this normal? I fear that my 2 year old son might have damaged it when he got in my camera bag. I recently updated my X-T1 to v4.0 as well so I can't remember it happening before (firmware bug??). Any help is appreciated!

Todd

Try this....

Attach the lens to a camera, turn the camera on and try tilting the lens again.
If it stops making the noise whist on the camera under power then what you are hearing is the AF system moving whilst it is not under power and is totally normal. You should hear it on the 50-140, sounds like the entire lens is falling to pieces inside it!  Only seems to happen on the larger lenses with the linear AF motors.

Matt

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PaoloV
PaoloV New Member • Posts: 19
Re: Internal Glass Movement in XF 16-55mm Lens Is Normal?

jtosbo00 wrote:

I haven't really noticed it before but the second glass inside (starting from the mount-side) is moving freely when I tilt the lens unmounted. It focuses fine and zoom is good. However, the LCD/Viewfinder will flicker if I turn the zoom ring while trying to focus. Is this normal? I fear that my 2 year old son might have damaged it when he got in my camera bag. I recently updated my X-T1 to v4.0 as well so I can't remember it happening before (firmware bug??). Any help is appreciated!

Todd

Hi, I recently noticed that my 16 55 also has this internal movement. Do you think this is normal? I often get the message to turn the camera off and on again (X-E3) . Thank you

yukosteel
yukosteel Regular Member • Posts: 362
Re: Internal Glass Movement in XF 16-55mm Lens Is Normal?
1

PaoloV wrote:

jtosbo00 wrote:

I haven't really noticed it before but the second glass inside (starting from the mount-side) is moving freely when I tilt the lens unmounted. It focuses fine and zoom is good. However, the LCD/Viewfinder will flicker if I turn the zoom ring while trying to focus. Is this normal? I fear that my 2 year old son might have damaged it when he got in my camera bag. I recently updated my X-T1 to v4.0 as well so I can't remember it happening before (firmware bug??). Any help is appreciated!

Todd

Hi, I recently noticed that my 16 55 also has this internal movement. Do you think this is normal? I often get the message to turn the camera off and on again (X-E3) . Thank you

I'd recommend to check if you attach 16-55 properly to X-E3, sometimes it may be slightly offset radially and contacts don't connect properly with camera contacts.

Internal movement in XF 16-55 is normal when it is powered off, because focusing group is supported with electromagnets, and when there are no power - focusing group is sliding freely on guiding poles.

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PaoloV
PaoloV New Member • Posts: 19
Re: Internal Glass Movement in XF 16-55mm Lens Is Normal?

yukosteel wrote:

PaoloV wrote:

jtosbo00 wrote:

I haven't really noticed it before but the second glass inside (starting from the mount-side) is moving freely when I tilt the lens unmounted. It focuses fine and zoom is good. However, the LCD/Viewfinder will flicker if I turn the zoom ring while trying to focus. Is this normal? I fear that my 2 year old son might have damaged it when he got in my camera bag. I recently updated my X-T1 to v4.0 as well so I can't remember it happening before (firmware bug??). Any help is appreciated!

Todd

Hi, I recently noticed that my 16 55 also has this internal movement. Do you think this is normal? I often get the message to turn the camera off and on again (X-E3) . Thank you

I'd recommend to check if you attach 16-55 properly to X-E3, sometimes it may be slightly offset radially and contacts don't connect properly with camera contacts.

Internal movement in XF 16-55 is normal when it is powered off, because focusing group is supported with electromagnets, and when there are no power - focusing group is sliding freely on guiding poles.

Thank you very much! I'll check but I change lenses often, the problem it's only present with the 16 55

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