Sigma 30mm f1.4 strange circle appearing

Started Jan 7, 2019 | Discussions thread
briantilley
briantilley Veteran Member • Posts: 6,448
Re: Sigma 30mm f1.4 strange circle appearing
1

Sheri D wrote:

Did anyone find a fix to this. I'm experiencing the same issue and it makes some awesome shots useless.

This looks like a known problem, when in-camera Lens Aberration Correction is turned on with some third-party lenses:

https://www.dpreview.com/news/8327651556/sigma-warns-of-aberration-bug-affecting-some-of-its-lenses-on-canon-dslrs

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