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07/21/2003 02:35:56 AM · #1 |
How do you convert a picture to B&W using the channel mixer? I here everyone saying this, I've always just done it in modes, is this wrong?
Lee |
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07/21/2003 03:21:52 AM · #2 |
I always wonder this too.. in ps7 I just hit desaturate then adjust the brightness and contrast.. I'm going to try channel mixer though!
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07/21/2003 03:36:40 AM · #3 |
There is a box way at the bottom labeled "Monochrome." Once you check that, you will see a grayscale preview. Then adjust the three color sliders until you have your desired grayscale characteristics.
Be sure to put it on an adjustment layer so you can modify it or toggle it on/off. Go to "New Adjustment Layer" and select Channel Mixer from the popup menu.
Message edited by author 2003-07-21 03:37:32. |
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07/21/2003 03:58:53 AM · #4 |
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07/21/2003 04:03:24 AM · #5 |
| You're welcome. I'm moving all the sliders to one end now; see you in the morning! |
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07/21/2003 04:14:41 AM · #6 |
There are dozens of methods you can use to convert to B&W, the channel mixer being one of them. LAB-to-Grayscale is another that gives good results. You can get even more complicated by introducing layers and masks.
Here is an excellent, in-depth article that explains the different methods and how to use them:
//www.cliffshade.com/dpfwiw/b&w.htm
Message edited by author 2003-07-21 04:15:45.
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07/22/2003 12:46:35 PM · #7 |
That website really has some key ideas on it. The Lab - Grayscal method is even better then the Channel Mixer for me, but maybe thats just me! Thanks all!
Lee |
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07/22/2003 01:09:40 PM · #8 |
Originally posted by Spanish Grease:
That website really has some key ideas on it. The Lab - Grayscal method is even better then the Channel Mixer for me, but maybe thats just me! Thanks all!
Lee |
If it works for you, that's the way you should go!
The channel mixer way gives a lot more control, in terms of how much red, green and blue get used to comprise the final B&W version.
The LAB approach is more of a 'pure' conversion of the tonal values.
The channel mixer approach is the same as putting different coloured filters over the lens prior to shooting in B&W. In general it makes sense when using the channel mixer that the percentages of red, green and blue that you use should add to 100% (more for a more contrasty/ over exposed look, less than 100% for a darker, lower contrast result)
Message edited by author 2003-07-22 13:10:49. |
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07/22/2003 01:13:21 PM · #9 |
Haje's (SharQ) article about this process really helped me:
//www.photocritic.org/articles/photo/colourbw.php
This is the only way to go for me, now. It's amazing the control one has over B/W conversion with the channel mixer. |
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07/22/2003 01:30:06 PM · #10 |
It's threads like these that make me glad I read the forums.
Pedro |
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