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Columns of Nothing

(http://nocache-nocookies.digitalgott.com/gallery/18/13201_22_01_16_10_04_08.jpeg)

http://www.fractalforums.com/index.php?action=gallery;sa=view;id=18615

FYI: If you want to reduce the noise in your image, you can try reduce this by one the following methods:

• Smaller "Raystep multiplier" value
  
• Smaller "Stepwidth multiplier" value (if i have deduced correctly Raystep * Stepwidth = distance estimate steps... smaller = better)
  
• Bigger "Stepcount for binary" count value (increases accuracy of location of  surface)
  
• Bigger "Smooth normals" value (reduces roughness of surface)
  

And one I use often is - increase the image height & width (e.g. by clicking the Scale 'up' button twice) and reduce the image view (by clicking the 1:1 'down' button until it shows 1:4).

Here is an example:

Using 1 formula: BulboxP-2 (with default options) ...

Default rendering:
(http://orig05.deviantart.net/96f5/f/2016/022/c/a/1_by_1bryan1-d9oxia7.png)

With more steps
(http://orig15.deviantart.net/a144/f/2016/022/d/d/2_by_1bryan1-d9oxihw.png)

With more smooth
(http://orig09.deviantart.net/53a4/f/2016/022/d/f/3_by_1bryan1-d9oxiib.png)

With scaling
(http://orig00.deviantart.net/be3a/f/2016/022/d/8/4_by_1bryan1-d9oxiix.png)

thank you bryan!
I just saw your post by sheer luck. and it is really helpful.