topic Re: RF 70-200 f2.8, internal parts wobbling in EF & RF Lenses

RF 70-200 f2.8, internal parts wobbling

devinantonovich — Fri, 16 Feb 2024 00:55:44 GMT

Hello all,

I picked up an rf 70-200 f2.8. This is my first experience with this lens. I noticed that the lens was making some soft knocking noise as I was taking it out of the box, then I looked into the front element and saw this:

https://youtube.com/shorts/WgTyYlnnozs?si=kfpMZYp_0EsmTln7

Im not really an expert on lens internals, but it looks to me like the part which houses the aperture is loose and wobbles about pretty significantly when the lens is moved about. Is this normal?? Seems not very normal. When the lens is mounted to the camera and IS engages the wobble stops. Really weird. Never seen anything like this before. Please help! Luckily its still under warranty…

Re: RF 70-200 f2.8, internal parts wobbling

Tronhard — Fri, 16 Feb 2024 01:00:32 GMT

The lens Optical Image Stabilization is designed to vibrate at a very, very high frequency when attached to a camera and powered on. However, when the lens is not under power, the components will still seem loose and will wobble.
The big question is does the lens take sharp images? If so, I believe you are just seeing the normal OIS behaviour.

Re: RF 70-200 f2.8, internal parts wobbling

devinantonovich — Fri, 16 Feb 2024 01:33:42 GMT

It seems to take sharp images so far as I can tell after looking at them on a 43” screen…

Re: RF 70-200 f2.8, internal parts wobbling

Tronhard — Fri, 16 Feb 2024 01:41:50 GMT

That is encouraging news. I would hazard you are observing the normal but mildly disconcerting behaviour of the OIS system.

Re: RF 70-200 f2.8, internal parts wobbling

Tronhard — Fri, 16 Feb 2024 01:47:59 GMT

If you do have any issues, and you live in the US, feel free to call 800-OK-CANON to talk to a technician.

Re: RF 70-200 f2.8, internal parts wobbling

jrhoffman75 — Fri, 16 Feb 2024 18:44:54 GMT

From the instruction manual:

rf70-200-f28lisusm-im2-eng.pdf (c-wss.com)