Annular noise

Started 4 months ago | Discussions thread
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BudIngramLile New Member • Posts: 1
Annular noise

Good morning!  Just starting with a photo shoot this weekend, I've noticed a lot of annular noise on the edges of the photograph.

Sometimes it looks like I'm using an APC lens on a full frame (I shoot Sony A7III), but it's not.  On other images, it's a very clearly demarcated clear circle, with lots of red noise outside of the circle.

It's never done this before.  These are pretty heavily used cameras for concert shoots.

Any ideas?  Sensor damage?  Cold weather?

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