What is this ring showing on my lens?

Started 8 months ago | Questions thread
OP Sagnet New Member • Posts: 7
Re: What is this ring showing on my lens?
1

Fastfreddy74 wrote:

Try to disable lens aberration corrections in camera, and check if the circle is gone.

It can happen with old lenses on recent camera bodies

Thanks guys, it was the "Peripheral illumination corr" that did it. Turned it off, and the ring was gone.

For completeness, the lens is the Sigma 50mm 1.4 EX DG HSM.

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