What are these red pixels artifact on T4i image?

Started Dec 9, 2012 | Questions thread
Pete4
Contributing MemberPosts: 747
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Re: What are these red pixels artifact on T4i image?
In reply to CarlosLM, Dec 11, 2012

there is a function to map out hot pixels, I don't remember off hand, it should be in manual how to do it. I really can't tell from your picture how many pixel big is that red spot, you may check with Canon, if it's too many in one spot you can't map them all out and camera maybe considered defective?  At such short exposure you shouldn't see much. I did my standard 30sec exposure at 400 ISO as soon as get my camera and I don't see anything, but I think there must be some noise reduction going on I missed.

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