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Sharpening action?
Old 09-13-2003, 12:16 PM   #1 (permalink)
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Do you have a favorite sharpening action (preferably free)? If so where can I download? Thanks.
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Re: Sharpening action?
Old 09-13-2003, 12:30 PM   #2 (permalink)
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I just use the unsharp mask. You might also want to check out this article by Rolando for selective sharpening to enhance photos. The unsharp mask is a great tool but can be overdone, resulting in pixelization of edges. All things in moderation..... (or most things anyway... [img]/ubbthreads/images/graemlins/grin.gif[/img] )

Take care and have a great weekend!

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Re: Sharpening action?
Old 09-13-2003, 01:58 PM   #3 (permalink)
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Intellesharp from Fredmiranda.com. It ain't free but it's a good'n.
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Re: Sharpening action?
Old 09-13-2003, 02:25 PM   #4 (permalink)
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One of the best ways to sharpen is to dup the image onto a new layer. Change the mode to Luminosity then run an Unsharp mask on it. You can increase the sharping to levels that you would not normally do because of the Luminosity. Amounts like 50%, 100% or even 200%, Radius at 2 or 3 pixels with no Threshold.

Then reduce the Opacity on this layer to get the effect you like. Large images may only need 70% reductions while small images would only need 10 to 30%.
 
 
here is a good one
Old 09-13-2003, 03:56 PM   #5 (permalink)
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that doesn't sharpen your bokeh...it uses edges to sharpen by building a mask...
I am not the original author of this and don't remember who was....

Take these steps and create an action in photoshop...works great.



1. Open your image, as usual. Perform all your other corrections on it before sharpening, as usual.
2. When you're ready to sharpen, click on the Channels palette and create a new channel. This new channel will eventually be your mask. Change it's name to "Sharpening Mask."
3. Click on the RGB channel for your image.
4. Select the entire image (Select->Select All).
5. Copy the entire image (Edit->Copy).
6. Click on the Sharpening Mask channel you created in Step #2. Paste the image in (Edit->Paste). It'll appear in black and white, but that's what we want, so don't worry.
7. Use the Find Edges filter (Filter->Stylize->Find Edges) on the Sharpening Mask channel. It'll turn into something that looks a bit like a line drawing. Our next steps will be to tweak this mask.
8. We want the black to be really black and the white to be really white in our mask, so use Levels to make the adjustment (Image->Adjust->Levels). Move the black point in from the left, and the white point in from the right (the triangles under the histogram). How much you do this is one of the critical choices you'll be making, so take your time, and remember that the black areas are what are going to be sharpened (the white areas won't be sharpened).
9. We want to hide the actual sharpening of the edges, so we need to make sure there's a smooth transition from white to black in our mask. To accomplish this, use a small Gaussian blur on the image (say 2-4 pixels) (Filter->Blur->Gaussian Blur).
10. Now we need to tell Photoshop that our Sharpening Mask is just that, a mask. To do that, we need to select the black bits only. Use Select->Load Selection. In the dialog that comes up, make sure that Sharpening Mask appears as the Channel and that the Invert box is checked.
11. Click on the Layers tab and make the image visible again. You should see the selection created in Step #10 superimposed over the image.
12. Get the image ready for sharpening. Choose View->Show->Hide Edges (Cmd/Ctrl-H) to make the selection invisible, then choose View->Actual Pixels and scroll the image to an area with which you want to evaluate the sharpening.
13. Finally, we're ready to sharpen. Select Filter->Sharpen->Unsharp Mask and play with the values. Note that you can use much higher amounts than usual, as the halos tend to fall outside the selected areas. Radius should be a low value (.5 to 1.0), and Threshold should be 0. If you find that the sharpened area is too restrictive, go back to Step 8 and change your mask.
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Re: here is a good one
Old 09-14-2003, 03:16 PM   #6 (permalink)
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I used to use Fred Mirandaís actions. They are very good and almost for free. Recently I bought the PhotoKit Sharpener (http://www.pixelgenius.com/sharpener/index.html), itís not free, but very good. Also see this review: http://www.luminous-landscape.com/re...harpener.shtml

Hendrik
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