how to remove block effect from bump node with textures I am trying to add a bumpiness to a texture on a sphere, but when rendering at close zoomed in proximities, it looks pixelated/blocky.

I've tried modifying the subdivision of the sphere to 6 (render), tried smoothing faces/recaculating normals, etc - but no matter what I do, it still gives me this 'blocky' look. I've tried using an input texture into the bump node, as well as simply using the bump node itself, but still get the same thing.

Any idea on how to fix this? Here is an image:


Any idea how to fix that? Also - I am using a couple different light sources. Thanks!
First thing is you have your image texture set to 'color', that should be 'non color' data. plus looking at your image it looks too low res, you need a 16bit image to make good bump maps.