05. Frequency Separation, noise & USM local contrast

In this final chapter Karl delves further into Frequency separation, noise and local contrast control. He demonstrates how these can be used in your skin and beauty retouching workflow as he goes over the final steps of his retouch, as well as a special tip to speed up your frequency separation workflow.


  1. hi, OK. Ive sorted it out now. I think it was the way I either duplicated the layers or made new layers

  2. Hi Karl,
    Im having trouble with my hf layer. I set up my background layer, made two duplicates, applied the gaussian blur to the lf layer. I then applied the settings for the hf layer and hit ok. all looking good so far but then when I change the hf blend mode to linear light instead of the original image popping up the image just gets too light to see. Whatever am I doing wrong ? Im working alongside your video for frequency separation
    Thank you

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