Weird circle lines

[o.robles]

I did this wallpaper for my wife on PS but for the life of me I can't figure out why it shows this
weird circles in the background. Any ideas?

 

[Bsoyks]

I think this is due to the quality of the image. Those circles are the lighting effect, and there are more of them as the resolution gets higher.

 

[IamSam]

This is called banding.

https://www.youtube.com/results?search_query=Photoshop+banding

 

[o.robles]

This is called banding.

Sir, you're a gentleman and a scholar! . Thanks.

 

[IamSam]

Your welcome.