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Vibrating noise: Sigma 70-300mm F4-5.6 APO DG macro lens


AlanWil Avatar
AlanWil 1 8
17 Sep 2022 1:56PM
Good day. I have a Sigma 70-300mm F4-5.6 APO DG macro lens which often makes a worrying vibrating noise immediately after I attach it to my Sony A58 DSLR and switch the camera on. After a few seconds, the noise generally stops, and then the lens and autofocus works fine and quietly. Should I be worried? What might be causing the noise? Is there something I can do to avoid it? Thank you!
EddieAC Avatar
EddieAC 18 3.8k 2 United Kingdom
21 Sep 2022 7:33PM
Hi Alan,

I have never used a Sony but am just wondering if the noise you hear is either the autofocus system doing an initial self test or maybe Sony's in-camera image stabilization initializing. Does it happen only with this lens? Do you know anyone else with a Sony camera who could test your lens on their camera or maybe a Sony shop where you could take it and ask them to mount your lens to a display model to check?

I am assuming that you have at least one other lens that does not do this.

If everything is fine after the initial startup then maybe it's not too much of an issue.
AlanWil Avatar
AlanWil 1 8
22 Sep 2022 11:35AM
Thanks for the reply, Eddie. It only happens with this one lens, and the noise started very recently. The noise also occurs if I use this lens in my other Sony DSLR (A390). I have a few other zoom lenses, including Tamrons, Sigmas and Minoltas, but they are all silent. It definitely sounds indicative of a problem, to me. It sounds like it could be plastic gear wheels grinding, rather than engaging, but I'm only guessing. The lens's focusing and zoom rings are not particularly stiff when operated manually.
AlanWil Avatar
AlanWil 1 8
22 Sep 2022 12:12PM
PS.. Here is a 13-second video where you can see and hear the issue happening:
https://youtu.be/eUf4itn5Eb4
EddieAC Avatar
EddieAC 18 3.8k 2 United Kingdom
22 Sep 2022 8:58PM
Yes, that does sound like a problem and as it is happening on the other camera too. It is far too loud to be a normal operational noise. The focus is trying to extend as well while it is grinding so it seems a definite fault.

I probably would consider that lens a risk to the camera with continued use.

It may be an option to trade it in on MPB.com for a similar lens as I think it may be more costly to repair than to buy a similar one second hand.
AlanWil Avatar
AlanWil 1 8
23 Sep 2022 1:26PM
OK, Eddie - thank you for the reply and the suggestion.
AlanWil Avatar
AlanWil 1 8
23 Sep 2022 8:16PM
Luckily, I have another zoom I can used: Tamron 16-300mm F/3.5 6.3 Di II VC PZD. In some ways it's a better lens - apart from some CA when close to 300mm. The faulty Sigma APO had no CA at all, and that's why I'll miss it.

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