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Curves really is one of the most powerful tools inside of Photoshop. You can think of Curves like Levels but Levels on steroids, because we can do so much more. One of the interesting things about Curves is that we can make specific adjustments to our image. Whether we are working on the composite mode of the RGB channels, or we can get into specific channels, meaning we can add a little bit of red, or we can work on the cyans. We can really target Contrast and Tone and Color in order to enhancem or correctm with Curves.
Well, because Curves is so importantm let's go ahead and step back for a minute and deconstruct this dialog, and just begin to become familiar with how this is actually laid out and how it actually works. Well, the first thing you'll notice is that we're currently viewing this in this composite RGB mode. What that allows us to do is to make an adjustment, which will then affect all three channels. You'll also notice here that we have Output and then Input. Both of these are grayscale, going from black to white, and going again from black to white here.
Then we have a line that goes across this dialog. Well, this line is actually pretty interesting. It shows us how we are going to map a tone. For example, here we have my blacks. If I click and drag up, what I am going to do is actually take a black that was pretty deep, and I am just going to brighten that, as I click and drag it more and more higher. So, we can modify different areas of our image, depending on where we click on this line. I'll demonstrate how that works. But at least for now, we know okay there's a dividing line.
When we click and drag this one way or another, it makes some kind of a change to our images. The other thing that's kind of interesting is that we can target a specific Channel, whether Red, Green or Blue. Now, this is quite fascinating, because it gives us a lot of control when working on specific colors or tones, again, either to correct or enhance. All right. Well let's take a look at these. One of things that's fascinating, that we really need to get familiar, with is how we make these adjustments in the different Channels; for example, in the Red Channel, it's not just red.
It's actually Red and Cyan. The easy way to remember this is that if you click and drag up near the name of the channel, it adds red. If you click and drag down, it's going to add the opposite color in the color wheel, Cyan. The same thing goes for the other channels, like the Green Channel here. Click and drag up. You are going to add Green. Click and drag down. You are removing Green, or adding Magenta. Same thing for the last channel here, which is Blue. Again, we can either work with Blue or Yellow in this channel.
Now that we have been introduced to this dialog, let's deconstruct this even a little bit further, and begin to take a look at how the Curves dialog actually works. Let's do that in the next movie.
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