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"Smart Sharpening" Technique

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Old 11-01-2004, 09:00 PM
DARCgull DARCgull is offline
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Join Date: Nov 2004
Location: Waihi Beach, Bay Of Plenty, in the North Island of New Zealand
Posts: 11
Browsing round, I happened on this site and found it very interesting, so I registered and hope someone can help me with a problem I have when trying to use JB sharpener, Namely, that when I start the action, I get a message in the second stage,--" the object "black channel" is not currently available".

Looking through the Help section I can see nothing refering to a black channel.

Can any of you good folks help me out here?

P.s I notice Peter has the same problem a few threads back too. Problem also crops up on a couple of other actions too.

Last edited by DARCgull; 11-02-2004 at 12:38 AM. Reason: browsed FAQ
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Old 11-02-2004, 01:13 PM
Janet Petty's Avatar
Janet Petty Janet Petty is offline
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Join Date: Jan 2004
Location: Mid-South
Posts: 2,166
Blog Entries: 1
re: black channel

RGB mode (red, green, blue) will not have a black channel.

CMYK mode (cyan, magenta, yellow, & black) has a black channel.

I'm assuming the creator of the action was using CMYK as the basis for the action.
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Old 11-02-2004, 07:09 PM
DARCgull DARCgull is offline
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Location: Waihi Beach, Bay Of Plenty, in the North Island of New Zealand
Posts: 11
black channel

Thank you for that, I will go and give it a try.
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Old 12-09-2004, 06:40 AM
gmitchel gmitchel is offline
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Join Date: Apr 2004
Location: Tallahassee, FL
Posts: 316
Originally Posted by jeaniesa
I was wandering around the links on the John Houston site that Chris just posted and found a great technique for sharpening. I tried it on a photo and what a difference!! Some of you may already know this technique, but I thought it was a really cool find. Between this technique and the one DJ posted for lightening dark areas, my photo retouching has just taken a huge leap forward.

Thanks Chris and DJ for sending me down this path.

The article on Smart Sharpening describes edge sharpening. You're right, many will be familiar with it.

The article leaves out some steps that are important, if you want really good results. For example, it does not use Blend If to keep sharpening away from the highlights and the shadows.

My TLR Sharpening Toolkit is a free download. It is a sophisticated Photoshop action set for sharpening images.

The toolkit is based on the three-pass sharpening philosophy described by Bruce Fraser, although it can also be used for single-pass or two-pass sharpening. I engineered this toolkit to include the best features of commercial sharpening tools, like Focal Blade and Photokit Sharpener. Features include:

• Sharpen with Highpass Filter or USM sharpening.

• Sharpen edges and surfaces separately (or either alone).

• Sharpen light and dark pixels separately.

• Generate masks using luminosity or color boundaries or a composite of the two.

• Brush in creative sharpening/blurring.

• Blend If settings protect against sharpening highlights and shadows.

• All sharpening is done non-destructively using layers.

The action set comes with illustrated instructions in PDF. I also have tutorials, tips, and a learning gallery to help with sharpening.


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Old 12-15-2005, 05:45 AM
Garyw1960 Garyw1960 is offline
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Join Date: Dec 2005
Posts: 2
Smile First post.........hello

Hello .thanks for a terrific site and all your contributions.

Sharpening has always been my problem. Jeaniesa mentions John Houstons sharpening technique and another technique for lightening shadows.

Would it be possible to put a link to the posts mentioned .many thanks

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Old 10-13-2006, 06:23 AM
paroroonman paroroonman is offline
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Join Date: Oct 2006
Posts: 4
Re: "Smart Sharpening" Technique

the fastest way to sharpen an image is by "UNSHARP MASK" however it may sharpen all the iamges and will create ugly noise.. so the best way is go to channel and choose what channel (can be one or two channels) you would ONLY sharpen (not the four channels) and presto you will see a great result!
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