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Canon 15-85mm lens sounds loose inside

Started Nov 21, 2018 | Discussions thread
Steve Balcombe Forum Pro • Posts: 15,582
Re: Canon 15-85mm lens sounds loose inside

One possibility is that the IS group, which moves when the image stabiliser operates, is not properly 'parked'. This can happen if the lens is hurriedly removed from a body without waiting the necessary couple of seconds for the IS mechanism to stop and park. The IS group can then move slightly if the lens is shaken. Some lenses 'rattle' more than others when this happens - I don't know about the 15-85 specifically.

To rectify it, simply attach to a body, switch on, half-press the shutter to start the IS then release, wait until you hear the IS stop (two seconds; you may hear a slight click), then remove the lens. Now shake gently - is the problem fixed?

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