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Author   Topic : "Values & Color, ways of control?"
EL Chief
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PostPosted: Tue Jun 14, 2005 7:19 am     Reply with quote
Hello.

I know that many artists start their artworks by laying in values in grayscale, within a range of 1 - 10 (light to dark or vice versa).

Now i'm wondering how to change from grayscale to color, and control the values while doing so(painting in grayscale is easy, because the values are described in percent (1-100) in Photoshop, but how do i know, how dark or light a color is compared to that?).

I know two ways, to go from gray to color: Either create a new layer, set to color. so the values stay underneath (which looks often more than ugly), merge that layer after blocking in the color, and work from that point, or block the color in with transparent brushes and go on from there.
Both ways make me feel, that i have to do a certain part of the work twice.

So i wonder if there are better methods to go from value to color, or if it would be best, to start with color right away, establishing color and value at the same time?

Is there a function in Photoshop that shows how dark or light a certain color is in percent (like in grayscale)?

I really would be happy for your comments, because i lost my way in the big pool of painting techniques Smile

thx
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eyewoo
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PostPosted: Tue Jun 14, 2005 7:51 am     Reply with quote
In Photoshop, the Color Balance adjustment function (Ctrl B) will change any selected gray areas to any color. Then the Levels adjustment function (Ctrl L) can be used to darken or lighten an area. Used in conjunction with texture painting in Quick Mask, a variety of textures can be achieved.
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Last edited by eyewoo on Wed Jun 15, 2005 9:06 am; edited 1 time in total
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sweetums
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PostPosted: Tue Jun 14, 2005 4:20 pm     Reply with quote
Try a web search for "Photoshop colorization tutorial," or "Photoshop color B&W tutorial," and then try some different techniques like this one to see which works best for what you are trying to do.
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Jin
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PostPosted: Tue Jun 14, 2005 6:18 pm     Reply with quote
EL Chief wrote:


Is there a function in Photoshop that shows how dark or light a certain color is in percent (like in grayscale)?


Corel Painter's the program I'm most familiar with and, there, if I wanted to match greyscale dark/light values when I painted with color, I would go to the Color Info palette menu and choose Display as HSV (Hue, Saturation, Value), pick an area of my "greyscale" image with the Dropper tool and look at the V (Value) percent. Then I would choose a color and adjust the V (Value) slider to match what I picked in the "greyscale" image. Unlike Photoshop, Painter doesn't have true greyscale, so this would be in RGB automatically.

Though I do use Photoshop now and then, I'm not an expert and not sure if this would work for you. One of the Photoshop experts here will have to tell us. Here's my method:

Open your greyscale image and change the Mode to RGB. (You'll need to do this in order to have the Color palette display HSB (Hue, Saturation, Brightness) values.)

With the Eyedropper tool, pick an area of your "greyscale" image, and look at the B (Brightness) percent. Then choose a color and adjust the B (Brightness) slider to match what you picked in the "greyscale" image.

It seems a tedious way to work, but at least (if I'm right) you'll be able to match your Brightness values (or come very close) when you paint to add color.


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EL Chief
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PostPosted: Tue Jun 14, 2005 9:35 pm     Reply with quote
@eyewoo and sweetums
thx guys. your methods are more technical solutions, but i'm searching for something integrated into the painting progress. Though it's an interesting technique for an artwork that is already 100% done.

@JIn
thx. this is something that could definetly work.

Now what do you think guys. Is it better to do values first (in grayscale) or to start right away with color and values at the same time?
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Lunatique
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PostPosted: Tue Jun 14, 2005 11:23 pm     Reply with quote
I personally can't do values first and then color. I've tried it and I never liked the way the finished work looks. I think when working in B/W, there is a tendency to overplay the contrast for that visual punch, and when you try to color that, you are getting overblown highlights and lost details in the shadow. I know that ideally a good color piece should reproduce well in B/W too, but many times, the subtle differences in hue is what makes a piece work, and you really have to be working in that mentality while painting. But if you do a whole piece in B/W first, you're not thinking in that mentality, and the piece would take a different direction altogether. Just MHO.

Some people like working that way and is great at it. Steven Stahlberg is a good example.
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cheney
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PostPosted: Wed Jun 15, 2005 7:00 am     Reply with quote
Eyewoos suggestion may have been more technical, but I believe that is the best solution that will maintain the quality of your grey scale art yet still allow you the greatest possible level of color control. Eyewoo likes to use quickmask as he has mentioned several times, probably because it is much more painter friendly.

I like to actually use multiple channels. Let me attempt to explain to make this seem a bit less complicated. Channels are 101 color grey scales used to interpret opacity of a selection. All black, color 0%, represents no selection. All white, color 100%, represents fully selected. Various grey scale values in between represent their coordinating percentage value of selected opacity. Start by selecting a section of the image you wish to color and copy this into your clipboard. Open a new channel and paste, and you should see it as a selection anyways. If your sketch was black on a white surface then you will need to open a new channel and fill with 100% white color to see your intented selection with the colors properly inverted. Drag this down to the button that looks like "O" to be sure you capture all your channel data. Create a new layer and fill with your intended color. You probably will not get exactly what you want the first time, but now you can tweak your layer or go back to the channel to remove or alter certain areas of your intended selection. This will take a bit of quick practice to get the basics, but I promise it is worth learning to use the channels a great way to quickly adjust your imagry across a value spectrum.
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LadyHydralisk
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PostPosted: Wed Jun 15, 2005 9:40 am     Reply with quote
I don't work this way, I simply do a pencil undersketch and lay down the color without a greyscale value map.

However, if you wanted to do this you could try doing this:

Make a grisaille (monochrome)

Colorize it, up the saturation to a level you like.

Use the selection tool to encircle individual parts and change the hue and chroma to the difference you want. Don't touch the brightness levels. (value)

I've thought about doing this before but since it is not related to oil traditional media working I want to avoid it. I don't want to be a photoshop artist.
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balistic
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PostPosted: Wed Jun 15, 2005 10:45 am     Reply with quote
LadyHydralisk wrote:

I've thought about doing this before but since it is not related to oil traditional media working I want to avoid it. I don't want to be a photoshop artist.


Hmmm . . . why use digital at all then? Digital painting has a different toolset from traditional media. If you're going to limit yourself strictly to processes that have an analog counterpart, you may as well just use paint from the outset.

There's no undo in real life, no incremental saves . . . no such thing as nondestructive editing. Really, the only compelling reason to use digital media is that it allows for such things, isn't it?

edit: this comes off as a little more antagonistic than I'd intended.
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eyewoo
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PostPosted: Wed Jun 15, 2005 11:26 am     Reply with quote
LadyHydralisk wrote:
Don't touch the brightness levels. (value)

Why not...??? working with and modifying levels in selected areas (bright or dark, gradient or textured) is one of the digital mediums most valuable capabilities...
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matter
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PostPosted: Wed Jun 15, 2005 6:54 pm     Reply with quote
what about making a layer full of gray set to color that u can turn on and off if u want to check the values? a large part of the problem for me is chroma: a high saturation masks the effect of darkened value and visually brightens it, IMO, so this wouldn't necessarily help achieve a "successful" image. if u look at impressionist paintings, they generally hav very little value changes in overall composition and let color carry itself.
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EL Chief
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PostPosted: Thu Jun 16, 2005 12:12 am     Reply with quote
@Lunatique
thx for your opinion. i understand your arguments, but i think, that one needs really much experience to build up color and value at the same time.
For me, it's a struggle. Sometimes i win, often i loose Smile .

I read Steven Stahlbergs's Tutorial on his page. I made my pics nearly the same way, because it's a really structured way to do it. His style is very clean, and i try to become more painterly, but there are really awesome artworks on his page.

As long as i'm not experienced like the 'big guys', i fear i have to do it with grayscale.


@cheney
thx. i did't meant 'technical' as a bad thing, no offense. And i'm going to learn this technique. if i'm not going to use it with my paintings, i might use it for something else. better to know it, than not to know.

@LadyHydralisk

Quote:
I don't want to be a photoshop artist.

well, i don't wanna miss the comfort and safety of the digital age.
thx

@balistic
same opinion like mine

@matter
thx. i'll try that too.

Well, really different approaches and opinions. I wonder what might come next Smile .

thx guys.

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