StarTools

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: after: any tips?

m

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!

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

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