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Thread: High Pass or Unsharp Mask Technique for Sharpening?

  1. #1

    Default High Pass or Unsharp Mask Technique for Sharpening?

    hi all

    Was trying out 2 different techniques of sharpening in this PS CS3 Essential skills book.

    I tried it on 2 different photos. Unsharp mask is more tedious but supposedly to work better than High pass sharpening.

    High Pass


    By windforce86

    Unsharp


    By windforce86

    High Pass


    By windforce86

    UNsharp


    By windforce86

    All images at 100% crop

    Thanks for reading

  2. #2
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    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    hi, not sure if highpass really sharpens images.
    but it can make ur pictures more contrasty, which may make them look sharper.

    to do it, create a copy of the layer and add high pass to it, around 5.0 radius? (u can play around with it)
    then under blending options, try selecting between "overlay" "soft-light" "hard-light"

    hope this is slightly helpful at least :]
    personally i like the effect it gives.

    cheers

  3. #3

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Quote Originally Posted by shmuckerz View Post
    hi, not sure if highpass really sharpens images.
    but it can make ur pictures more contrasty, which may make them look sharper.

    to do it, create a copy of the layer and add high pass to it, around 5.0 radius? (u can play around with it)
    then under blending options, try selecting between "overlay" "soft-light" "hard-light"

    hope this is slightly helpful at least :]
    personally i like the effect it gives.

    cheers
    haha yea thats exactly wad i did which was mentioned in the book 1-5.0 pixel and soft light or overlay.

    but although i did so much work for unsharp which includes threshold gau blur ++++ the effect still ok onli but the book shows that unsharp works better. somehow

  4. #4

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Used to favour unsharp masks but it makes the photo a tad noisy. Ive switched to high pass filter ever since.

  5. #5
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    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    its hard 2 tell from ur photos as it seems like theres some handshake or something making it look abit blur...

    i use high pass filter for my own preference... think it boils down to preference of how u like to work ur photos...

  6. #6
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    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Quote Originally Posted by Occellatus View Post
    Used to favour unsharp masks but it makes the photo a tad noisy. Ive switched to high pass filter ever since.
    The noise due to sharpening can be reduced if you set the threshold to about 2 or 3.

  7. #7
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    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Quote Originally Posted by nitellort View Post
    its hard 2 tell from ur photos as it seems like theres some handshake or something making it look abit blur...

    i use high pass filter for my own preference... think it boils down to preference of how u like to work ur photos...
    Yup, I agree. It's personal preference. There is no method that is objectively better, just boils down to what you prefer. Personally, I prefer unsharp mask as I find that the high pass tends to increase contrast too much, and sometimes I just want the photo sharpened without adding contrast.

    However, to clarify shmuckerz comment, all methods of sharpening the photo do not really sharpen the photo. They merely increase the edge contrast of the photo, producing the perception of a sharper image. However, the image is not strictly sharpened. It just appears that way.

  8. #8

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Quote Originally Posted by plato View Post
    The noise due to sharpening can be reduced if you set the threshold to about 2 or 3.
    Thanks for the great tip bro....

  9. #9

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Thanks for all the comments. Yea the photos a bit handshake due to the low light and high aperture.

    I actually also prefer high pass rather than unsharp for this photo at least. Maybe it works for different situations. Will try more.

    thanks again.

  10. #10

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Hi windforce,
    may i know what lens u using for both those pics? look soft to me, quite bit of noise. any IS?
    btw, the first pic is 1 or 2 dragonflies?

  11. #11

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    how to do the unsharp mask? can anyone brieftly tell me the steps? i wanna try too...
    My Hoots: A200, DSC-W80

  12. #12

    Default Re: High Pass or Unsharp Mask Technique for Sharpening?

    Quote Originally Posted by gunawan View Post
    Hi windforce,
    may i know what lens u using for both those pics? look soft to me, quite bit of noise. any IS?
    btw, the first pic is 1 or 2 dragonflies?
    actually i dont theres any diff whether wad lens i use becoz i just need a comparison between the 2 sharpening methods. Of course you could fix the lens or fine tune it but that isn't my point here

    anw i'm using 80-200 f2.8 for dragon flies and a 60m micro for the lizard. both no VR since i'm using nikon.

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