P38Ace
Posts: 108
Joined: Wed Jul 29, 2009 9:14 am

Some Help With Unsharp Mask

Wed Apr 14, 2010 5:19 pm

Ok I need some understanding here. I have studied your editing guide and i am having some stupid issues that maybe you can help figure out. When getting ready to apply USM i bust out the magic wand and click on the sky. Some of the times the marching ants make a boarder around the AC. But most of the time I click on the sky and the marching Ants are all over the place. How do i fix that? I am beating my head on the desk as we speak.    The problem I am having is why I am limiting myself to the pics I take.

Also Is it correct to apply USM after you resize or should I apply to before i re size.... Thanks for your support
 
chuck9941
Posts: 176
Joined: Wed Sep 14, 2005 2:58 pm

Some Help With Unsharp Mask

Wed Apr 14, 2010 5:24 pm

hold down the shift key and keep clicking away on the area you want to select until you get what you want. and/or adjust the sampling size on the toolbar at top.
Oh, it's a big pretty white plane with red stripes, curtains in the windows and wheels and it looks like a big Tylenol.
 
sovietjet
Posts: 2546
Joined: Sat Mar 15, 2003 12:32 am

Some Help With Unsharp Mask

Wed Apr 14, 2010 5:25 pm

Apply after resize. To avoid them being all over the place raise the tolerance a bit. I usually use a value of 10.
 
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JohnKrist
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Some Help With Unsharp Mask

Wed Apr 14, 2010 6:17 pm

If you click the sky with the magic wand, it does just that, it selects the sky, or rather all pixels that it thinks is the same as the one you clicked. But, you don't want to sharpen the sky, so you need to inverse the selection (Select->Inverse).
I don't use the magic wand, it's a blunt tool. Use the Quick Selection Tool, it's easier to pick exactly what you want by using different brush sizes, magic wand picks what it thinks you want. Hold shift to enlarge the selected area, and Alt to decrease it.
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stevemchey
Posts: 339
Joined: Wed Feb 04, 2009 11:41 pm

Some Help With Unsharp Mask

Wed Apr 14, 2010 7:08 pm

+1 for the Quick Selection Tool

The Magic Wand works to some extend when you have a completely blue sky and the aircraft has no blue in it. But if you have a picture of an aircraft on the ground, you have almost no luck using the Wand.
 
P38Ace
Posts: 108
Joined: Wed Jul 29, 2009 9:14 am

Some Help With Unsharp Mask

Wed Apr 14, 2010 7:37 pm

Quoting stevemchey (Reply 4):

What would you select?
 
viv
Posts: 2953
Joined: Tue May 31, 2005 5:17 pm

RE: Some Help With Unsharp Mask

Wed Apr 14, 2010 9:32 pm

Quoting p38Ace (Reply 5):
What would you select?

The Magnetic Lasso. Just draw with it around the aircraft outline.
Nikon D700, Nikkor 80-400, Fuji X Pro 1, Fujinon 35 f/1.4, Fujinon 18 f/2
 
P38Ace
Posts: 108
Joined: Wed Jul 29, 2009 9:14 am

RE: Some Help With Unsharp Mask

Wed Apr 14, 2010 10:10 pm

Again thank you very much....
 
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jid
Posts: 889
Joined: Wed Dec 01, 2004 7:37 pm

RE: Some Help With Unsharp Mask

Fri Apr 16, 2010 9:17 pm

Using the wand to select things for sharpening is a very inefficient way to make a selection. Do a search for edge sharpening, find a method that works best for you then turn it into an action.

Jid
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iamlucky13
Posts: 319
Joined: Wed Aug 08, 2007 12:35 pm

RE: Some Help With Unsharp Mask

Tue Apr 20, 2010 5:21 pm

Just a related tip that I know you can do in GIMP, and assume in Photoshop, too - in the GIMP there's a setting with the magic wand called threshhold (I think it's the same as what sovietjet called tolerance) that lets you change the value difference between the pixel you click on and those that will be selected.

It's still a very imperfect method, but this does give you a little more control.

Also, I prefer to do my sharpening on a copied layer and use the selection I make to create a layer mask rather than working directly within a selection.

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