I see the artifact, the sky is a mundane blue overlain with concentric circles. I don’t think this is a camera problem specifically. However, keep in mind that I have been wrong more than 1000 times this month. I think the problem is due to the fact that the camera saves the data as a JPEG file. This is a scheme developed by the Joint Photo Experts Group. The JPEG method compresses the file data to save storage space. The file is then reinstated when called up for viewing, editing, or printing. The scheme is somewhat like how you might condense a book by casting out all the “and”, “is”, “a”, “the” etc . to save space on a hard drive. When viewed, the software attempts to restore, but this is never seamless. Same for a digital picture file; the sky is mundane blue, the software cast out pixels for storage. If the file is viewed and saved, some additional pixels are cast out. In other words, the rebuilding process is flawed. I suggest you look at your image-editing software, try different software. Also, I think this camera can save in “raw”. Try that approach. Also look at the camera’s menu; have you selected the largest file size? If not, the situation is exacerbated.