Deborah Liperote |
Photoshop Color Values Please Help I have photoshop cs2. I am trying to get a handle on it. I have for a couple of months been doing some basic editing with it. I got Scott Kelbys book photoshop cs2 for digital photographers. In chapter 6 he gives settings for photoshop color correction. I'm supposed to go into curves and enter values: Setting target color for shadow areas so I'm supposed to double click on the black eyedropper tool and color picker box shows up then i'm supposed to put in these values RGB of 20,20,20 to make shadows neutral To make highlights neutral i'm supposed to go to the white eyedropper and a color picker box shows up and for RGB i'm to put in values 244,244,244 Then for midtones which is the middle eyedropper I put in the RGB values of 133,133,133 for them to be neutral. So:
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Pete H |
Hello Deborah, I have not read the book you cite, but color in the RGB spectrum does not change..they are specific numerical values. I do not use the system you describe, but I can see why it is recommended in your book. They are nothing more than starting points to get you on the right track. For instance, the RGB values of 20,20,20 will be very dark, yet allow "some" shadow detail to remain visible. The midtone numbers you quote are a mystery to me. If you mean neutral gray, these numbers should be 1/2 the value of 255 for all three RGB levels. 244,244,244 are extreme white; 255 is the top value for white, so I'm not really sure why the author chose 244? I've seen this theory before, but as I said, I do not use it for several reasons. 1) It is a cookie cutter approach to "leveling" your images. Not all images require a flat value. More to the point: I generally use the levels slider while holding down the "alt" key until I begin to see highlites on one end and shadows on the black point slider. Some people adjust this to taste, others use numerical values entered in the 3 boxes in levels. If you really want to aggravate yourself (LOL) use "curves." I actually love curves in many situations. Curves have the ability to fine tune ANY of the 255 levels of brighness and magnitude of the RGB spectrum without affecting the other valuse. They can change only a small part of the image (i.e 20-40 range) as an example, and not touch the other values. Further, "curves" can be selectivly applied to parts of the image YOU decide need correction. With all that said, you will find it is easy for all this to get out of control. Doing it by the numbers has some merit, but I feel it stifles creativity. Hope that helps a little and hasn't confused you further. ;) Pete
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