canon 70d red noice

[ash92]

First, I apologize for my bad English. I got a gift for my birthday Canon 70d, and then I noticed there was a problem. In dark areas or poorly exposed areas makes this a problem. These are original files without processing. I shot in RAW the same problem remains. I turned off the noise-pushing still remains the problem. With noise suppressing on, too, the problem remains. I changed lenses, and there's still no difference. I restarted the settings at least 1000 times . The camera has been bought second-hand and there is no guarantee. At light exposures, that's fine.

https://www.flickr.com/photos/159604553@N02/50661115222/in/dateposted-public/

raw photo

https://drive.google.com/file/d/19V1hgzYMBm8Z1hStDyBoOMyJLJKMyGF3/view?usp=sharing

[Peter]

https://community.usa.canon.com/t5/EOS/Red-Grain-in-the-Under-Exposed-portions-of-the-Image-Canon-70...

Your raw file. Every 4th column like the one in the link.

[ebiggs1]

"The camera has been bought second-hand and there is no guarantee."

Yeah, that's one of the risks you take when you buy used gear. It is not always the cheapest way to go.

"At light exposures, that's fine."

It is still there, you just can't see it or don't notice it.  They don't fix themselves.