I rendered it right in apophysis. The render Quality was probably set to 10000 (recently I've only been using 6000), but I definitely cleaned it up some in gimp afterward.
Usually I'll do some of these things: 1) duplicate the fractal layer, blur it by .5-1 px and set to Lighten Only 2) apply the GREYCstoration plugin for gimp, which does noise reduction 3) blur another duplicate by 10-20 px and set to screen/soft-light at a lower opacity 4) sometimes I'll even zoom in and smudge certain parts by hand with a soft brush (more often in the background areas) 5) playing with levels/curves to adjust contrast can sometimes hide graininess 6) sometimes I'll render it even larger than I want and then scale it down a little
I'm sure it also depends on what sort of variations/transforms you use.
And thanks!
1) duplicate the fractal layer, blur it by .5-1 px and set to Lighten Only
2) apply the GREYCstoration plugin for gimp, which does noise reduction
3) blur another duplicate by 10-20 px and set to screen/soft-light at a lower opacity
4) sometimes I'll even zoom in and smudge certain parts by hand with a soft brush (more often in the background areas)
5) playing with levels/curves to adjust contrast can sometimes hide graininess
6) sometimes I'll render it even larger than I want and then scale it down a little
I'm sure it also depends on what sort of variations/transforms you use.