What's the best way to create convex and concave dimples in a plane?

[danb4026]

I need to create a pattern consisting of raised and recessed dimples. I have tried using displacement, but the results are not crisp enough. I have also tried booleans and that was a complete nightmare. Any advice as to how to do this with geometry?

[Boxek]

If you need a close up use displacement with a realliy high tesellation. If its for like panels or tiled textures u might try normal maps.