Coloring in Apophysis - Part 3

6 min read

Deviation Actions

tatasz's avatar
A brief guide to coloring in Apophysis. A Chaotica tutorial on the subject coming out soon too =D
Special thanks to BoxTail for reminding me about an important tool the dummy here forgot to add.

(and yeah, all example images shamelessly rendered in chaotica because it is handier).

Last but not least, if you fancy the gradient i used as example here, you can download it from:

Gradient Pack #3 by tatasz

Lets go back to the adjustments window, this time on the render tab.

Render by tatasz

1 - Gamma

Gamma basically defines how "solid" will your fractal look. Low gamma will result in more translucid, shiny and higher contrast appearence, while higher gamma values will result in more solid and flat stuff.


G1 by tatasz

G2 by tatasz

G4 by tatasz

Tip: if your fractal is made of shiny edges only, try increasing gamma. It may reveal some nice details. If the result looks too flat, compensate it increasing brightness

2 - Brightness

Well, name says it. Controls the brightness of your image. Keep in mind that the brightness effect will depend on gamma settings (and also the other way around).


G4 by tatasz

Brightness100 by tatasz

For lower gamma, brightness will have more impact on the image.

3 - Vibrancy

Well, quite a crazy setting. Lowering vibrancy will let the colors overal lighter and less saturated. Increasing vibrancy, on the other hand, will increase saturation and also make the image darker.

Vib0-5 by tatasz

Vib1 by tatasz

V1-5 by tatasz

Your colors look a bit too pale? Just set vibrancy a little bit (by lets say 0.1 or 0.2).

4 - Background

Click on the coloured rectangle to change the BG color. In the color window, just select a color and click "OK"

Color by tatasz

Background color may affect the colors of your fractal too (because some areas are semitransparent).

5 - Gamma Threshold

As the name says, a threshold. Can be used to threshold some less dense areas, removing artifacts or noise.

Th0 by tatasz

Th0-2 by tatasz

Th2 by tatasz

Be careful to not overdo on this one. Most times, it is better to just render a bit longer.

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Lady-Compassion's avatar
:iconlaplz:  Thanks for sharing!
0bsidianFire's avatar
The gamma setting is one of my favorite things to fiddle with. I'll usually do it in post-process and save several different versions of the final fractal with different gammas. Then I'll blend them in GIMP so I get a mixture of their different effects.
lyc's avatar
the trouble is that once you've saved to png (never save to jpeg before doing postprocessing ofc), all the high precision colour info from the renderer is already lost, so you can get nasty banding etc.
0bsidianFire's avatar
Are you saying that the color info gets dumped after the first time you save to png (before post-process) or after you close the post-process window down? That said, the Grain Merge/Grain Extract filters help a ton for fine-tuning color.
lyc's avatar
in the fractal renderer itself, colours are stored with 32bit floating point per channel (RGB and alpha). png/jpeg/etc use 8 bit per channel, so once it's been saved in that format a lot of information has been lost, and you can't work with it nearly as freely as you could in the rendering app (although it then needs to actually support those features natively).
0bsidianFire's avatar
So as long as you're working in post-process you still have access to all the color data?
lyc's avatar
in gimp or so, if you've loaded a png/jpeg, it's 8bit per channel low dynamic range, as opposed to 32bit high dynamic range data in the rendering engine.
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