Sigma 20mm F1.4 Art. Something shaking inside, is it OK?

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fractal2019 New Member • Posts: 7
Sigma 20mm F1.4 Art. Something shaking inside, is it OK?

For about a year I have Sigma 20mm F1.4 Art lens for Canon.

Once I noted that if I'm holding the lens in hand and starting to shake it, then I feel that something small is knocking inside. Just a bit. Like something is not screwed on and could move for a millimeter.

Lens is working good, I have no other problems. But warranty is ending soon, so I doubt, should I visit repair center and show them this kind of problem. Or is it normal and lens have some free part inside that should move when I shake it?

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