Hi everyone.
It is well known that frequency spearation is a technique to retouching skin in Portaits. There are a lot of PhotoShop tutorials about it.
One layer with gaussian blur and one above with linear light... but what would be the equivalent of "Apply Image" (used in Photoshop) in PhotoPaint, and what values should I use? (Preferably on the 2017 version)
For those who do not know what frecueny separation is www.google.com/search
On Gimp there is a very interesting "Macro" https://docs.gimp.org/en/plug-in-wavelet-decompose.html The problem there is that it generates 1 layer per level, aka pixel. If you want 3 pixel diffusion on the color layer you have 3 detail layers.
Thank you for your analysis. After years squirming and struggling to do FS on Photo-Paint, I realize that the issue here is that PP has not any Linear Light blending mode, so that it cannot recreate exact pixel-per-pixel calculation with combination of the two layers into an origin one.
Hum. I did two experiments.1. Creating the two layers, color, and texture on PhotoPaint, and opening them in Photoshop using Linear Light blending mode.
And the second test, Preparing both layers on Photoshop and opening them in PhotoPaint using Strong Light blending mode.
I am afraid, both tests failed. So, not only the blending mode is responsible, but also, one or both of the layers are not ok.
I will keep using Ps for this I guess. If someone does not want to pay Ps, Gimp has an interesting solution. (I posted the link below)
I played and used FS in PP and PaintShop Pro I liked the process for large volume people work. If you have several to do it or budget sensitive clients. Lucky for me. I don't deal with people images very much.
I create a color layer and a Lightness layer independent of each other. Creating these layers is simply by overlaying the original images over a white background and using the blend modes mentioned.