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In this movie I want to give you a sense for how you can combine black and white along with a channel mixer in order to take advantage of the best of both features. So here we're looking at that infrared effect that we created a few movies back using the channel mixer. And as you may recall we had posterization problems, and I didn't even address all of them. If you look closely in the upper left hand corner of the image You'll see that there's more posterization in the background, and we have some weird highlight details along the top of the younger woman's hair.
So, I'm going to go ahead and zoom out, and I'm also going to throw away this layer of gaussian blur, because we're not going to need it. We're going to mask those posterized areas away. So I'll right-click on the word Smart Filters, and choose Clear Smart Filters. And then, given that we no longer need the smart object, I'll right click inside the image window with the rectangular tool, and I'll choose rasterize small object. And the reason that's a good idea is because smart objects add to file size, so if you don't need them, don't use them.
Now I'm going to turn off that channel mixer layer and click on it, so that'll create the black and white layer on top. And you can either choose black and white from the black white icon at the bottom of the layers panel or if you have the custom shortcut, press Ctrl+Shift+B or Cmd+Shift+B on the Mac and I'm going to call this guy alt b and w mix and click OK. We could start with the preset infared which does get us someplace actually, however, it doesn't give us the cool effect we were seeing a moment ago and We've got the Posterization again, and very plainly so in the background woman's face.
So I'm going to customize things using the Target Adjustment tool, and I'll start by dragging underneath the younger woman's eye. And that ends up, in my case, highlighing yellows, and I'm going to take that yellows value down to 130. Then I'll click above the eye which should highlight the reds and indeed it does. And I'm going to brighten those reds to a tune of 60 and the only reason I'm working with round values here is so you can easily follow along if you want to. Then I'll drag inside the woman's jacket.
And that in my case, highlights the blues, and I'll take that blues value up to 50 as you can see here, and then from here on I'll just adjust the slider triangles. Now notice, if I crank up the magenta's value, I'm brightening up this background woma's hair, as well as portions of her jacket. We don't want to go as high as 300, that looks pretty ridiculous, so I'm going to take this value down to 70. The greens don't really resonate too much. You can see a little bit of action in the down left corner here, but not too much is going on.
So I'm just going to match that same yellows value which is 130. And then finally, we've got cyans. And I"ll show you where the cyans are located in this image. It's the earring, so if I crank up the scion value we're seeing the ring around that earring, and if I crank it down and it's turning darker. For now I'm going to take it to lets say about a hundred. So these are the settings I'm going with. Red 60, yellow is 30, green is 130, cyan is 100, blue is 50, and finally magenta is 70.
Alright I'll go ahead and hide the properties panel And zoom out from my image once again. And, let's take a look at how we might merge these two layers together. Now if I turn on this channel mixer layer, it's going to make a big huge difference, whereas turning off the black and white layer does nothing. And that's because black and white doesn't have anything to work from after this point, it's just taking a black and white image and making it black and white. But what we can do now is we can mass through the channel mixer layer. So I'm going to click on that layer to make it active.
And then I'm going to drop down to the add layer mask icon and click on it. So we have a layer mass that we can paint inside of. Alright, let's start with the upper left corner of the image. I'll select the brush tool, and I'm going to right-click inside my image here to show you that I have the hardness now set to 0%, and I might take the size value up to 200 pixels to start with. You want to make sure that your foreground color is black, as it is in my case, and then you want to paint away those areas of posterization, including the strange halos that are coming off the girl's hair.
And I'm going to paint inside the background of the woman's face as well because that's pretty heavily posturized. And i might paint down into this region of the image. Scroll down here so I can see more of that out of focus background and paint it away. And I might paint inside of this region a little bit as well. I've got some details up here I need to take care of. So I'll go ahead and paint those regions away. So in other words, we're using the channel mixer layer where we need it, and we're painting it away, where it's essentially causing problems for the image.
I'm also going to paint inside the young woman's face. Her chin, her nose, and up into her forehead, as well. But I want to try and leave the eye alone. In fact, I might have painted over portions of the eye here. I'm going to press the x key and reduce the size of my brush and paint back in on that eye because notice, without the channel mixer layer, if I turn it off, she's got an awfully dark circle around that eye. So I'll go ahead and turn channel mixer back on. It's a little too bright right there at that location, so I'll press the X key to switch back to black, and paint that back in.
And then finally we want the earring to brighten up, so I'll go ahead and paint over it as well. Alright now, at this point I'll just press the M key to switch back to the rectangular marquee. And I want to reduce what's known as the density of this layer mask. That is to say, rather than having the black portion of the layer mask absolutely hide the contents of this layer, I'd like them to mostly hide the layer. And you get to the density value by double-clicking on the layer mass thumbnail here inside the layers panel.
That brings up the properties panel, and notice if I reduce the density value to zero, that changes the entire layer mass back to white, and we are once again seeing the effects of the channel mixer layer across the entire image. And if we change the density value back to 100%, then all of our black brush strokes are returned to black and they're absolutely hiding the effects of this layer. I want to split the difference a little bit so I'm going to click inside that value and press Shift+down arrow three times to reduce the density value to 70%.
Which turns the blacks of the layer mask to dark gray. And it does so temporarily, so you can always come back and change your mind later. Alright, now I'm going to hide the properties panel. And the final thing I want to do is. I want to brighten up that earring a little bit. And I'm going to do that by double-clicking on the thumb nail for the Alt+B and W mix layer. And I'm going to increase that science value dramatically, in fact I'm going to take it up to 260. In order to compensate for what's going on with the channel mixer layer.
Alright, that takes care of it. Now press the F key a couple of times in order to switch to the full screen mode. And zoom out a little bit as well, and just so you can see the difference here. This is the original infrared version of the image, with the dark earring, probably an overly bright face. And all that Posterization in the background. And this is the new smoother version of the image, thanks to a combination of Black-and-White and Channel Mixer working together.
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