While it took considerable effort to work out the right “recipe” to portray the ultra-fine curly hair on the surface of a new tennis ball, I’m quite pleased with the result.
The tennis court material is derived from Adobe Substance, with Photoshop and Alchemy used to integrate the paint line in the back. The initial output of that process was far lower resolution than I expected, but became a “happy accident”, producing a pleasant depth-of-field effect without the challenge of setting focus.