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Basic Image Correction with Frequency Separation


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  • Caravaggio
    question about frequency separation method
    I like the frequency separation technique and am starting to use it and get more familiar with it. The only problem I have is where areas of extremely strong contrast meet or "edges". If I clone over those areas on the high frequency layer, it introduces a tonal change into the image when...
    02-18-2011, 03:53 PM
  • fraiseap
    Extended frequency separation
    I have been playing around with frequency separation using a couple of methods;

    1. Using surface blur to create a low frequency layer and using high pass to create a high frequncy layer and blending the two with linear light

    2. Using the Model Mayhem technique of creating...
    12-30-2010, 09:42 AM
  • baryon
    Frequency separation: Really non-destructive?
    I have recently been experimenting with frequency separation, using the Apply Image method to create a "blurred" layer and a high frequency one.

    I absolutely love the amount of control you get when cloning directly on the high frequency layer: it's not something you can normally...
    09-08-2013, 02:17 PM
    Smudging when using Frequency Separation
    I am still very new to retouching but have found Frequency Separation for use when retouching to be extremely useful. I still have a problem that I do not know how to overcome. I am still getting smudging when cloning with a hard edge brush on the High layer. An example would be when trying to remove...
    12-18-2011, 04:36 AM
  • bilguitei
    frequency separation-questions?
    Well i have been trying to watch tutorials...And i watched one in retouchpro and also from anyother websites....I still cannot understand it that much...What's the purpose of it?And why do i have to use it?Please if you know very clear and detailed tutorials on internet,help me to find it????
    10-08-2010, 02:43 AM
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  • #16
    Re: Basic Image Correction with Frequency Separati

    I'm guessing what Stroker is referring to when he talks about medium frequencies is further splitting the low frequency into even lower frequency (which will be the new low) and the low's high frequency (aka medium frequency).
    Experimenting with different blurs is also quite interesting. But don't limit yourself to blurring filters only, since the technique itself is basically not limited to frequency separation, but just finding the difference between two layers and adding it back together, you can also use sharpen filters, artistic filters or even cloud filters. Your fantasy is the limit


    • #17
      Re: Basic Image Correction with Frequency Separati

      I have been using this technique off and on for a while. I'm not convinced it's "all that" when it comes to retouching and I think that basically the spot healing brush, dodge & burn and the clone stamp used on a new layer are still the goto techniques though obviously they can be combined with freq separation. I think freq separation's real power is in color correcting images because you can paint underneath the high freq layer to make color corrections to the image.

      IMO however, the technique is flawed in that the current techniques for splitting the layers into high and low cannot discern true texture from luminance. What this means is that you will get shadows up on your high freq layer which are not true skin flaws or texture. Then, if you want to retouch or color correct those areas, you need to do additional work.

      Not saying it's not a useful technique but that it's often seen as a panacea of retouching but in reality it's just another tool that can be useful but is not the one-size-fits-all methodology.


      • #18
        Re: Basic Image Correction with Frequency Separati

        Is the frequency separation another way of doing the retouching in photoshop or its just as the normal retouching technique?


        • #19
          Re: Basic Image Correction with Frequency Separati

          Great tutorial thanks for sharing...