Fringe killer usage

[mgutierrez]

Hi all,

I'm trying to remove chromatic aberration from some stars. Fringe killer works nice but leaves a grayish background color where I apply the filter:

before:

Selection_077.png (47.57 KiB) Viewed 3583 times

after:

Selection_079.png (47.22 KiB) Viewed 3583 times

any tips?

m

[admin]

The Finge Killer indeed leaves the luminance (detail) intact and only attacks the color.

A few different techniques;

• You could try the Shrink module on those stars, with Color Taming increased.
• If your blue channel is very poor, you could also decide not to use it for luminance at all; use the Compose module to create a synthetic luminance frame from just red and green (set blue exposure to 0).
• You can also use the FilmDev module to throttle the blue channel's luminance contribution before using the Filter module.

Hope this helps!

[happy-kat]

Another option is to select all the problematic stars and exclude them from the colour module so they stay as just luminance.

[mgutierrez]

OMG, I don't know how could I miss my own post!!! shame on me!!! very sorry guys!!! thanks for your replies!
I've tried your workaround, but does not seem to work for me. Or maybe I don't know how to implement them. Using a mask is quite tricky for me. There are many stars that suffer from this aberration, but not all of them. Setting a proper mask is quite difficult.
Reducing blue channel's luminance does not show the expected outcome. I have to investigate and test a bit more.

Thanks again and very sorry for my late response

m