Dots on picuture with new Sigma 150-600mm

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Macen2000 New Member • Posts: 1
Dots on picuture with new Sigma 150-600mm

Hello out there!

I just bought a Sigma 150-600 contemporary for my Canon 5D Mark II. Great lens, but when zooming 600mm a small dot appears in top of the frame. And now a new one comes. I can't see anything on the lens.

Anybody knows what it is?

Best

Magnus

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Canon EOS 5D Mark II
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