I'm a newbie I'm a trying to generate a decent texture using shaders, but I can't make it work. The rendered image is blurred, as it was in motion, but it obviously is not, it's a simple plane with an applied shaders and the camera if fixed over it.

I tried evee as well cycles, I used f 8.0 and the plane as focus object, but nothing.

Any suggestion?

Thanks in advance

This is the rendered image https://pasteboard.co/JeLRDJg.png

This is the configuration https://pasteboard.co/JeLUohK.png