Have been dabbling with photography for a few months. I took a couple of photos using a Sony A7ii mirrorless camera. It's not the best camera out there but it's fairly high quality. I'm taking the photos in RAW format.
Can someone take a look at a couple of my photos and explain to me why where are these white-colored arcs in them? I'm not quite sure what's going on. My friend thinks that JPEG is not registering the colors in the RAW format and auto-defaults to white. I'm a bit skeptical of that because the majority of the photo is a clear blue sky.
NOTES: Thanks everyone. This was very helpful. I wasn't aware of the technical term "banding" but will spend some time to learn more about it.
In case it helps others, I'm including a link to a helpful article I found online: https://www.dpmag.com/how-to/tip-of-the-week/identifying-repairing-banding/