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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 09 May 2010 (Sunday) 19:53
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How to use a mask?

 
trailguy
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May 09, 2010 19:53 |  #1

I thought I was fairly smart, but I cannot figure out how to make a layer mask work in any effective mannner, no matter what book or magazine I read.
I know you can't tell me here in two ot three steps, but is there an online location that might help?
PC XP CS4

Thanks




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tim
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May 09, 2010 20:18 |  #2

I just create a layer mask using the icon on the bottom of the layers palette, grab a black brush, click on the layer mask (important step), ensure the brush is >0% opacity (use 100% to start with), then paint.


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Damo77
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May 09, 2010 20:34 |  #3

Absolutely nothing to it - just think of the layer as a window in your house. If you put some black cardboard over part of the window, you can't see the scenery through that bit, right? Same thing with layers - if you paint with black on the mask on part of the layer, you can't see that layer in that area.

Adjustment layers are created with all-white masks already attached, so it's easy to just paint with black as Tim described.


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ssim
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May 09, 2010 20:43 as a reply to  @ Damo77's post |  #4

I'll add my 2 cents worth here. Layer masking is really quite simple and very powerful. I have shown a layers panel with an explanation of the various icons.


IMAGE: http://www.pbase.com/ssim/image/124379310.jpg

I just grabbed a quick image to show you an example. In the below example I wanted to lighten up the left side of the dogs face. On the bottom most layer I made the dogs face lighter but the rest of the image was overly light. In the top most layer I had the dog all correct except for the left side of the face. I created a layer mask and then selected a soft brush and painted in black over the area that I wanted to show through from the bottom layer. You can see the black spot in the layer mask. That represents the area that is showing through from the bottom layer.

Black conceals, white reveals, is a good rule of thumb. When painting you can also adjust the brushes opacity level to attain different results.

There are many online tutorials that are probably better than this but this was done in a few minutes to illustrate it quickly for here.

IMAGE: http://www.pbase.com/ssim/image/124379314.jpg

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Damo77
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May 09, 2010 21:00 |  #5

ssim wrote in post #10151216 (external link)
Black reveals, white conceals

Oops! Typo! You mean the other way around, of course.


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ssim
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May 09, 2010 22:03 |  #6

Damo77 wrote in post #10151319 (external link)
Oops! Typo! You mean the other way around, of course.

Oops....I fixed that. Going too fast again.


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drdiesel1
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May 10, 2010 03:29 |  #7

ssim wrote in post #10151688 (external link)
Oops....I fixed that. Going too fast again.


Thanks for the quick explanation. The biggest problem with learning from books for me is, everybody yaks about trivial crap and delays getting to the point. I find myself forgeting what I'm trying to learn because they go off about some BS and then finally decide to come back to what's being explained. I don't care about the time they found something in the view finder while taking the shot they're working on :lol:


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lettershop
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May 10, 2010 03:43 |  #8

have you ever tried Lynda.com for self paced training? My wife swears by (and not at) them.


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drdiesel1
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May 10, 2010 03:58 |  #9

lettershop wrote in post #10152725 (external link)
have you ever tried Lynda.com for self paced training? My wife swears by (and not at) them.


:lol: I used them for a free 30 day trial, but didn't renew anything yet.
I'm currently working on color work flow and proper exposure.
Lab color is my current book, but I also have a few posing and portrait books I'm working on. Photo Shop is not a priority beyond the current knowledge for now, but I do appreciate the information. Thanks :cool:

I joined NAPP and use the video tutorials they have for quick stuff, but the Lynda stuff is much more in depth.


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How to use a mask?
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