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Sharpening tutorials?
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| E.J. van Wijngaarden 2005-06-17, 7:34 pm |
| Hello,
For PhotoShop there exist several tutorials and descirptions of advanced
sharpening technics, like:
- hig pass sharpening
(http://luminous-landscape.com/tutor...harpening.shtml)
- Fred Miranda's edge sharpening
(http://www.outbackphoto.com/worksho...y_05/essay.html)
etc.
I think these technics should be very well possible in Paint Sop Pro 9 as
well, but I find it difficult to translate the PS methods to PaintShop.
Does anybody know if these or other sharpening method descriptions are
available for Paint Shop?
Thanks in advance,
Ed van Wijngaarden
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"E.J. van Wijngaarden" <gentiana@planet.nl> wrote in message
news:42b2bc61$0$17219$ba620dc5@text.nova.planet.nl...
> Hello,
>
> For PhotoShop there exist several tutorials and descirptions of advanced
> sharpening technics, like:
> - hig pass sharpening
> (http://luminous-landscape.com/tutor...harpening.shtml)
> - Fred Miranda's edge sharpening
> (http://www.outbackphoto.com/worksho...y_05/essay.html)
> etc.
>
> I think these technics should be very well possible in Paint Sop Pro 9 as
> well, but I find it difficult to translate the PS methods to PaintShop.
> Does anybody know if these or other sharpening method descriptions are
> available for Paint Shop?
>
> Thanks in advance,
>
> Ed van Wijngaarden
Its called "edge enhancement"
Before the days of high acutance developers photographers had to revert to
Unsharp Mask's
Now in the digital age guess what we have.
USM sharpens the edge without sharpening the noise If used correctly.
Edge preserving smooth Keeps the edge while smoothing the noise.
Room to add variations on them if you wish.
Oh and use a tripod and you dont need to do much sharpening
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| Dory en Ed 2005-06-18, 7:27 am |
| Thanks for your answer, but it does not help me.
I use USM a lot. It is very usefull, but has its drawbacks; causing
artefacts and grain in clear areas is one of them.
The published techniques for PhotoSHop are not old techniques, that are
replaced by unsharp mask now.
They are fine-tuned sharpening techniques, that gives the user full control
over the process what and how to sharpen.
Despite the use of a tripod, sharpening will always be one of the standard
post-processing actions in digital photography.
I am still looking for some of these algoritms for Paint-Shop Pro..
Ed van Wijngaarden
"Trev" <trevbowdenATdsl.pipexDOTnet> schreef in bericht
news:A6CdnU49Wr6LdC_fRVnytQ@pipex.net...
>
> "E.J. van Wijngaarden" <gentiana@planet.nl> wrote in message
> news:42b2bc61$0$17219$ba620dc5@text.nova.planet.nl...
>
> Its called "edge enhancement"
> Before the days of high acutance developers photographers had to revert to
> Unsharp Mask's
>
> Now in the digital age guess what we have.
> USM sharpens the edge without sharpening the noise If used correctly.
> Edge preserving smooth Keeps the edge while smoothing the noise.
>
> Room to add variations on them if you wish.
>
> Oh and use a tripod and you dont need to do much sharpening
>
>
>
>
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| Nightingail 2005-06-18, 7:21 pm |
| Try this:
http://www.photo-plugins.com/Plugin...Sharpening.html
Gail
--
Nightingail's Gallery
http://www.nightingail.com
"Dory en Ed" <gentiana@planet.nl> wrote in message
news:42b3f34c$0$1602$ba620dc5@nova.planet.nl...
> Thanks for your answer, but it does not help me.
> I use USM a lot. It is very usefull, but has its drawbacks;
causing
> artefacts and grain in clear areas is one of them.
> The published techniques for PhotoSHop are not old techniques,
that are
> replaced by unsharp mask now.
> They are fine-tuned sharpening techniques, that gives the user
full control
> over the process what and how to sharpen.
> Despite the use of a tripod, sharpening will always be one of
the standard
> post-processing actions in digital photography.
>
> I am still looking for some of these algoritms for Paint-Shop
Pro..
>
> Ed van Wijngaarden
| |
| Fred Hiltz 2005-06-18, 7:21 pm |
| Dory en Ed wrote:
> Thanks for your answer, but it does not help me. I use USM a lot.
> It is very usefull, but has its drawbacks; causing artefacts and
> grain in clear areas is one of them. The published techniques for
> PhotoSHop are not old techniques, that are replaced by unsharp
> mask now. They are fine-tuned sharpening techniques, that gives
> the user full control over the process what and how to sharpen...
> I am still looking for some of these algoritms for Paint-Shop
> Pro.
High pass filtering has had some discussion in the Jasc PSP
newsgroup, unfortunately no longer accessible. The High Pass preset
for the user-defined filter approximates, but does not copy, the
Photoshop high pass filter. People use it in several ways, the
simplest being to apply it on a duplicate layer and adjust the
opacity to taste. Another way, from Jackie Laderoute:
1. Open image.
2. Duplicate background.
3. UDF's High Pass with Apply to = grey values.
4. Emboss.
5. Change blend mode on upper layer to "Overlay".
6. Adjust opacity.
The High Pass preset shipped with PSP 8 but not with PSP 9. It is
easily made, though:
-1 -1 -1
-1 9 -1
-1 -1 -1
Divisor = 1, Bias = 0.
As for noise, I prefer to deal with it by Digital Camera Noise
Removal rather than dodge it in the sharpening. Much more effective
than the new noise removal of PS CS2, a light application
emphasizing the small-scale noise works very well. Second best is a
light application of Edge Preserving Smooth. I find I never have to
set a clipping threshold in USM after removing the noise.
That said, Fred Miranda's edge sharpening technique works well in
PSP "for those who insist." Duplicate the layer, make an edge mask
for it, sharpen, adjust opacity.
I occasionally use the anti-halo edge masking technique where USM
alone over-sharpens strong edges. Duplicate the layer, make an edge
mask for it, invert the mask, sharpen, adjust opacity.
Both of these methods are easy to record as scripts, leaving the
duplicate layer for interactive opacity adjustment at the end.
--
Fred Hiltz, fhiltz at yahoo dot com
C-Tech volunteer
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| Dory en Ed 2005-06-19, 7:15 am |
| > High pass filtering has had some discussion in the Jasc PSP
> newsgroup, unfortunately no longer accessible. The High Pass preset
> for the user-defined filter approximates, but does not copy, the
> Photoshop high pass filter. People use it in several ways, the
> simplest being to apply it on a duplicate layer and adjust the
> opacity to taste. Another way, from Jackie Laderoute:
>
> 1. Open image.
> 2. Duplicate background.
> 3. UDF's High Pass with Apply to = grey values.
> 4. Emboss.
> 5. Change blend mode on upper layer to "Overlay".
> 6. Adjust opacity.
>
> The High Pass preset shipped with PSP 8 but not with PSP 9. It is
> easily made, though:
> -1 -1 -1
> -1 9 -1
> -1 -1 -1
> Divisor = 1, Bias = 0.
>
> As for noise, I prefer to deal with it by Digital Camera Noise
> Removal rather than dodge it in the sharpening. Much more effective
> than the new noise removal of PS CS2, a light application
> emphasizing the small-scale noise works very well. Second best is a
> light application of Edge Preserving Smooth. I find I never have to
> set a clipping threshold in USM after removing the noise.
>
> That said, Fred Miranda's edge sharpening technique works well in
> PSP "for those who insist." Duplicate the layer, make an edge mask
> for it, sharpen, adjust opacity.
>
> I occasionally use the anti-halo edge masking technique where USM
> alone over-sharpens strong edges. Duplicate the layer, make an edge
> mask for it, invert the mask, sharpen, adjust opacity.
>
> Both of these methods are easy to record as scripts, leaving the
> duplicate layer for interactive opacity adjustment at the end.
> --
> Fred Hiltz, fhiltz at yahoo dot com
> C-Tech volunteer
Thanks Fred,
Your answer is very usefull.
Two small questions:
- can you briefly instruct how to make the edge mask?
- in the UDF mask I se a 7x7 matrix; must I just use the uppper left 3x3
for your settins?
Thanks,
Ed van Wijngaarden
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| Fred Hiltz 2005-06-19, 7:25 pm |
| Dory en Ed wrote:
> Two small questions:
> - can you briefly instruct how to make the edge mask?
Sure. I was not certain how much of this you already knew. The idea
is to make a mask that is dark over the edges of interest and light
elsewhere for anti-halo, and the reverse to suppress sharpening
noise in smooth areas. This is how I put an anti-halo mask on a
duplicate layer before sharpening it:
1. Open an image. Duplicate the background layer. Change the name of
the duplicate from Copy of Background to Sharpened.
2. Duplicate the Sharpened layer. Name the new layer Edges.
3. Effects > Edge Effects > Find All.
4. Select the Sharpened layer in the Layers palette. Layers > New
Mask Layer > From Image. Create mask from source luminance. Do not
invert mask data. (For anti-noise, invert mask data.)
5. Delete the Edges layer.
6. (Optional) The edge mask usually needs to have its contrast
increased, sometimes a great deal, to restrict the following
sharpening to the desired regions. My preferred method is a
Histogram Adjustment of the mask, watching the preview to make white
the areas I want to sharpen and black the areas not to be sharpened.
7. Select the Sharpened layer. Unsharp Mask to taste.
> - in the UDF mask I se a 7x7 matrix; must I just use the
> uppper left 3x3 for your settins?
I am sorry, I forgot to write the important part! Center the 3x3
matrix in the UDF matrix.
You might enjoy the very active and friendly group of PSP users on
the Corel newsgroups. http://tinyurl.com/2pt9o has a list of their
URLs and instructions for setting up.
--
Fred Hiltz, fhiltz at yahoo dot com
C-Tech volunteer
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