Long exposure banding

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Atis photo
Atis photo New Member • Posts: 23
Long exposure banding

Hi,

recently bought EOS R and upgraded firmware to latest 1.7.

I'm mostly shooting long exposure night photos and unfortunately saw banding on few of those. Decided to test banding issue and shot multiple 2min exposures with lens cap on. Few of those have significant banding few have almost none. Does anyone now fix or caution steps to take to avoid this? Is it related to sensor overheating? I've been searching online with no real results other than this 'was' fixed in firmware 1.2...

Pushed +5stops, contrasts -100 to emphasize the problem. The left image was kind of ok, when not adjusting contrast, the right one was messed up.

 Atis photo's gear list:Atis photo's gear list
Canon EOS R Canon RF 24-105mm F4L IS USM
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