If ever something was considered magic in Photoshop it would have to be blend modes. There is so much we can do with these and they are, without a doubt, the fastest way to create special effects. The best results are often achieved purely by experimenting with blend modes. I recommend approaching them with the attitude of “what would happen if . . . ?”.
Unless you have an incredibly scientific mind like my friend and digital artist Olaf Giermann from Germany, who totally understands the inner workings of blend modes, don’t concern yourself with how they work, but instead work on developing a broad understanding of what you can do with them. Thankfully, blend modes have been organized in such a way that makes this a whole lot easier.
NOTETo make it easier to understand blend modes, I’ll talk about them in two parts—namely, the BASE (the bottom layer) and the BLEND (the layer to which the blend mode has been applied).
There are 27 blend modes and although they all behave differently from one another, they are organized into six groups (Figure 4.1). Some of the following descriptions might sound vague, but we’ll go through some examples as we work through this chapter. You’ll find that no matter how experienced you become with Photoshop, you’ll likely only ever use a portion of the blend modes; it’s highly unlikely you’ll ever use all 27, but you will have your favorites.
The six blend mode groups are as follows:
You’ll find blend modes in a number of different places in Photoshop, but the main place you’ll find and select them is in the Layers panel (Figure 4.2). If there is only a Background layer in the layer stack, then you’ll see that the option to change the blend mode is grayed out because you need to have at least two layers (BASE and BLEND) to use a blend mode. If you unlock this single Background layer by clicking once on its padlock icon, the blend modes become available; however, using them will have no impact on the single layer in the layer stack. When there is more than one layer in the stack, the blend modes will be available—just click on Normal to open up the menu with the available blend modes.
Let’s start by taking a look at the effects of each blend mode. For each of the following examples, there is a BASE layer, which is a portrait (Figure 4.3), and a BLEND layer, which is a texture (Figure 4.4).
We’ll apply the blend modes to the BLEND layer in the Layers panel (Figure 4.5).
My friend Colin Smith, who runs a superb educational site called PhotoshopCAFE (photoshopcafe.com), produced a cheat sheet for blend modes and he added a color bar and grayscale bar to the BASE layer picture, which really helps to show what is going on. With Colin’s permission, I’m stealing that idea and using it here (thanks, Colin).
So, as we change the blend mode of the BLEND layer, here’s what happens . . .
NORMALNothing happens when you use the Normal blend mode. All you can see is the texture, which is on top of the portrait in the layer stack. To see the layer beneath (BASE), you need to lower the opacity of the BLEND layer. In Figure 4.6, I’ve lowered the Opacity to 50%.
DISSOLVEDissolve is the same as Normal except that no transparency effects are applied to the pixels. Dissolve dithers pixels on and off—or in other words, granulates the BLEND layer—which creates an almost spray-paint effect that is visible when the Opacity is lowered. In Figure 4.7, I again lowered the Opacity of the BLEND layer to 50%. The Dissolve blend mode doesn’t actually blend pixels, but simply randomly reveals and conceals areas. If you use this blend mode you’ll likely end up using it at a reduced opacity.
DARKENAll of the Darken blend modes will do just that—darken the layer below with varying degrees of contrast or tone (Figure 4.8). If the BLEND layer contains white, then that part of the layer will not affect the BASE because you can’t darken with white, right? However, if parts of the BLEND layer are a darker tone than white, then those areas will darken the BASE layer. Again, this is one of the those blend modes that you’ll likely use at a reduced opacity.
MULTIPLYThe Multiply blend mode can be particularly useful for creating composite images because it combines the contrast and luminosity of both the BLEND and BASE layers. In Figure 4.9, the Multiply blend mode has blended the texture of the BLEND layer and has also darkened the BASE layer.
COLOR BURNAs with Multiply, Color Burn darkens both the BLEND and BASE layers, but it creates a much darker image with added contrast and saturation, almost to the point of giving it a burned look. You can see in Figure 4.10 that the black area of the gradient has turned completely dark, but at around the 50% gray area it looks much nicer. Notice how the white area is untouched.
LINEAR BURNThis is another really useful blend mode for getting a great darkening effect. It’s kind of similar to the regular Darken blend mode, but it’s definitely more subtle. You’ll see this blend mode used for creating an aged, vintage-looking effect but again using a lowered opacity on the BLEND layer. Again, no change to white (Figure 4.11).
DARKER COLORTo be honest, I don’t use this blend mode much, if at all. The result is that the darker colors on the BLEND layer are darkened, as you can see in Figure 4.12. Notice how in the white-to-black gradient, the texture above the 50% gray area is blended invisible. You could lower the opacity of this layer to see what results you get, but this isn’t a blend mode I tend to use at all.
LIGHTENThis does exactly the opposite of the Darken blend mode—only the lightest areas of the BASE and BLEND are visible (Figure 4.13). As the name suggests, this blend mode is used to lighten the image, which would explain why black areas of the BLEND are unaffected—you wouldn’t use black to lighten, right? Any area brighter than black will affect the BASE to some degree. In the white-to-black gradient you can see that the texture is unaffected in any area darker than around 50% gray.
SCREENThis is the opposite of Multiply. With the Screen blend mode, everything is brightened, with the exception of black on the BASE layer, which remains the same (Figure 4.14). If you look at the white-to-black gradient, you can see that pretty much all the way up until black, the texture is brightened and some fade is added. The black area remains unaffected.
I tend to use the Screen blend mode quite often when adding snow or rain effects to a picture, where the BLEND layer is a black-and-white layer with the snow or rain being the white parts. Using the Screen blend mode on a layer like this when its positioned as the BLEND layer (top) means the black disappears and only the white areas are visible. It also fades the image slightly, so lowering the Opacity and using some masking can help.
COLOR DODGEThis is the opposite of Color Burn. The BASE color is what influences the resulting image, which is brighter and has less contrast (Figure 4.15). Again, black remains unaffected.
This is one of my favorite blend modes for creating lighting effects; in particular, very powerful, bright lights of any color. Simply add a blank layer and use a brush to add a few strokes. When you change the blend mode to Color Dodge, you will see the effect to some extent, but you can increase the effect by duplicating the layer multiple times. I love it! Ultimately, when used on an entire layer, the Color Dodge blend mode brightens the image and intensifies the saturation.
LINEAR DODGE (ADD)Linear Dodge is a toned down version of the Color Dodge blend mode. It has a brightening effect, but the colors aren’t as intensely saturated, nor is there quite as much contrast (Figure 4.16).
I love to use this blend mode when brightening eyes. First I make a selection of the iris, and then I add a Selective Color adjustment layer and change the blend mode to Linear Dodge. Finally, I lower the Opacity of the layer to control the brightness of the eyes. You could use an adjustment layer to do this, but I use a Selective Color adjustment layer because it gives me even more options to alter the color and contrast with the sliders.
LIGHTER COLORThis is the opposite of Darker Color. If I’m being honest, I don’t recall ever using this blend mode. It’s bit more aggressive in how it blends the white areas of the BLEND layer to the BASE layer. Any areas of white up until around 50% gray are heavily blended, while anything beyond that is basically transparent (Figure 4.17). Again, I haven’t found a use or need for this blend mode, but hey, you never know.
OVERLAYI use Overlay a lot when I’m adding texture to pictures where I’ve photographed a subject against a gray roll of paper. Anything darker than 50% gray will add contrast to the BASE layer, and anything brighter than 50% gray will brighten and add contrast to the BASE layer (Figure 4.18). Yep, I use this one a lot! However, when adding textures, I do tend to desaturate the BLEND layer (texture) beforehand because otherwise the colors can look a little funky.
SOFT LIGHTThis is another blend mode that I use a lot. It works pretty much the same as Overlay, except that the result is less contrasty and much more subtle (Figure 4.19). Whether you choose Soft Light or Overlay is purely a matter of personal taste.
HARD LIGHTJust based on the name of this blend mode, you know the results are going to be strong, and you’ll see this when you give it a try. You’ll definitely want to reduce the Opacity of the BLEND layer when you use this. At 100% Opacity, Hard Light keeps the whites completely white and the blacks completely black, but the resulting blend is much less subtle (by a long shot) than Soft Light (Figure 4.20).
There’s only one technique with which I find myself using this blend mode (at the moment, anyway), and that’s when I add fake detail into eyes that don’t have any by adding a layer that contains monochromatic (grayscale) noise. There is a video on my YouTube channel showing this technique: http://bit.ly/dewis-hardlight
VIVID LIGHTThis is similar to Hard Light except that it uses Color Dodge and Color Burn instead of Screen and Multiply, resulting in much more contrast (Figure 4.21).
LINEAR LIGHTIf the BLEND color is lighter than 50% gray then the result we see is dodged, or the brightness has been increased. If the BLEND color is darker than 50% gray, then the result we see is burned, or the brightness has been reduced (Figure 4.22).
PIN LIGHTIn areas of the BLEND layer where the colors are 50% gray, the BASE layer will show through; anything else (lighter or darker than 50% gray) will remain visible on the BLEND layer (Figure 4.23).
HARD MIXThis basically results in a posterized image displaying red, green, blue, cyan, magenta, yellow, white, or black—i.e., the primary colors. There are no gradients blending the colors together (Figure 4.24).
You can create some really cool looks by using both the Pin Light and Hard Mix blend modes because of the way they remove the smooth transition between colors and create a posterized effect. Admittedly, you get some pretty extreme results with these blend modes. Although I’ve never found myself using them, I can totally see how they could be used for compositing and adding texture to images.
DIFFERENCEI use this a lot for lining up images. As you’ll see later in this chapter in the section called “Lining Up Layers with the Difference Blend Mode,” this is a super useful blend mode. It works by subtracting the lighter colors from the darker colors between the BLEND layer and BASE layer. White inverts the BASE layer and black makes no change (Figure 4.25).
EXCLUSIONThis is similar to Difference but with less saturation (Figure 4.26).
SUBTRACTThis subtracts the BLEND color from the BASE color, resulting in a darker image (Figure 4.27). Looking at this image now, I’m liking the effect a lot. Hmmm, might be something to use in a future project!
DIVIDEThis divides the BLEND color from the BASE color, resulting in a lighter image (Figure 4.28).
HUEThis uses the color/hue of the BLEND layer and the saturation and luminosity of the BASE layer (Figure 4.29).
SATURATIONThis uses the color saturation of the BLEND layer and the hue saturation of the BASE layer (Figure 4.30).
COLORThis uses the color from the BLEND layer and the luminosity and detail from the BASE layer (Figure 4.31).
LUMINOSITYAll of the detail on the BLEND layer is visible along with the color from the BASE layer (Figure 4.32). This is a great blend mode to use, for example, when you’re adding contrast to an image using something like a Curves adjustment layer and you notice that doing so also affects the colors by making them more saturated. Using the Luminosity blend mode can help with this by ensuring that the contrast doesn’t affect the colors. Of course, you may see a little change in the colors when adding contrast, but the Luminosity blend mode does a great job of helping to reduce that change.
I’m guessing if you’re anything like me, now that we’ve gone through the role of each blend mode, you agree about not needing to know how and why they do what they do, right?
Like I said before, out of all the blend modes, there will be a handful that you regularly turn to in your own workflow with your own images. However, I would advise experimenting and playing around with the blend modes to see what results you can come up with. I often do this just to see if I can come up with something new.
TIPTo quickly cycle through the blend modes so you can see what they do to an image, press V to select the Move Tool, and then hold down the Shift key while pressing the + or – keys. |
Now let’s take a look at a number of examples showing how I use blend modes in my images to create effects, blend images, create composites, and so on.
In this first example I want to add some fire to the foreground of a composite image I created. I photographed the model, Jessie, in the studio and added the background and floor later in Photoshop (Figure 4.33). As you’ll see in the following steps, adding the fire is extremely easy to do with blend modes.
As always, it’s a good idea to try a few other blend modes to see what results you get and what you prefer. In this case, I also tried the Screen blend mode (Figure 4.37), which made the flames look less contrasty and saturated, so I decided to stick with Lighten (Figure 4.38).
Having the ability to quickly remove the black from an image to blend it with another without having to make a selection is so incredibly handy. This is a technique I’ve used many times before and will continue to use in the future.
In the picture of my friend Brian Dukes (Figure 4.39 and 4.40) and the picture of the stag (Figure 4.41 and 4.42), which is actually a composite I made, the snow came from files I’d made myself by filming 4K footage of fake snow falling in front of a black piece of cardstock (Figure 4.43).
To add the snow to each picture I simply positioned the file containing the snow at the top of the layer stack and changed the blend mode to Screen, which removed the black and left the snow. I added multiple layers of snow to create depth.
NOTEI’ve included the picture of Brian (brian.jpg) and a snow file (snow.jpg) from my Creativity Pack 2 in the downloads for this book so that you can give this technique a try.
In this example I want to add my logo onto one of my pictures before posting it online. However, when the logo was designed by my buddy Dave Clayton, it was originally blue on white (Figure 4.44).
I could keep the logo in blue, but I think it will look better if I change it to black or white before adding it to the picture, so let’s go ahead and do that.
Earlier in the chapter I mentioned that the Difference blend mode is great for lining up layers, so I thought I’d show you how that works and then take it a step further.
This is incredibly handy, for example, when you have two photographs taken in quick succession in which the person photographed maybe has their eyes closed, but is posed perfectly in one picture, and in the other picture their eyes are open, but they’d moved one of their hands. You can line the images up using the Difference blend mode and the arrow keys on the keyboard, and then consider using a layer mask to reveal or conceal different areas of each image to end up with an image in which the person is posed perfectly and has their eyes open.
Let’s take it a step further. What if we wanted to line up two separate pictures, but it’s not quite as simple as using the Difference blend mode because one of the pictures is at a slight angle?
Figures 4.57 and 4.58 show a couple of pictures that I took of photographer and friend Ian Munro. You’ll find both files in the downloads folder for this book: ian_1.jpg and ian_2.jpg.
With ian_1 in the bottom layer position in Photoshop and ian_2 in the top layer position (Figure 4.59), if I change the blend mode of ian_2 to Difference, you can clearly see that it would take quite a bit of movement to get both layers lined up (Figure 4.60).
Ideally what I want to do is to mask out Ian’s head in the ian_2 layer to reveal the head on ian_1. So here’s a quick fix that will line up the layers in no time:
Now that the layers have been aligned and we’ve masked out the head, we could carry on with other retouching steps, but this technique again shows that there is always more than one way to do the same thing in Photoshop, and some ways are simply more time efficient.
This next technique is one I absolutely love! It is a superb way to color correct pictures, and is a really clever, but logical use of the Difference blend mode, as you’ll see.
We’re going to use a method whereby we need to tell Photoshop what is black and what is white in the picture, which is very simple to do; however, the clever part is identifying the 50% gray areas so we can do a much more accurate color correction.
Now we need to use the Set Gray Point sampler, and here’s how we can establish the gray areas within the picture:
NOTETo remove the markers that were put in place with the Color Sampler Tool, make sure the Color Sampler Tool is selected and click on Clear All in the options bar at the top of the screen (Figure 4.81).
To put it in the simplest terms, I absolutely love textures! I’ve used and continue to use them in so many of my pictures, whether it’s to add in new backgrounds or floors or simply to give the image an artistic or aged feel. There’s so much you can do with textures.
Each of the pictures shown in Figures 4.82–4.85 started off with a plain gray paper background behind the subject, and the texture was applied in Photoshop.
I want to take a moment to show you how I use textures in my portraits. When I say a moment, I really do mean a moment because you’ll see how quickly and easily you can transform your pictures by adding textures.
As an example, I’ll show you how easy it is to add in a new background or floor by using a blend mode, without the need for making complex selections and cutouts.
In the overview of the blend modes I mentioned that with Soft Light if the colors on the BLEND (in this case, the texture) are darker than the BASE (Ragged Victorians), then they are darkened. If the colors on the BLEND are lighter than the BASE, then they are lightened. Areas that are 50% gray remain unaffected, and the result of the blend adds a subtle amount of contrast.
With that in mind, let’s see what happens when we use the Soft Light blend mode for this image.
NOTEAfter grouping the textures I lowered the Opacity of the group to around 60% to reduce the overall effect of the textures on the background—done for no other reason than my own personal taste.
NOTEWhen you place layers into a group, you’ll see that the blend mode of the group is Pass Through. This is basically telling Photoshop to look into the group and continue to apply the blend modes of the layers within it. You could always experiment here and change the blend mode of the group to see what results you get.
That’s all there is to it! Now you’re ready to carry on with any other retouching you’d like to do.
So far we’ve looked at blend modes that we can access within the Layers panel, but blend modes do actually appear in other places within Photoshop, such as with Brushes, the Healing Brush, Clone Stamp Tool, Gradient Tool, and so on.
Here I want to show you my preferred technique for removing or reducing skin shine, whereby I use a blend mode with the Healing Brush for a very realistic result.
NOTEBy using a blank layer we’re working nondestructively, so we can remove the shine but still keep our original image safe and untouched.
On the opposite side of that, if you were working on a picture with an area that was darker than the area around it, you could try setting the Healing Brush to the Lighten blend mode. In theory, this would only lighten areas that were darker than the area you sampled.
WHY USE THE DARKEN BLEND MODE?When we sample the non-shiny skin with the Healing Brush set to the Darken blend mode, Photoshop will only darken areas of skin that are lighter/brighter than the area we sampled. So in this case, since the shiny skin is lighter/brighter than the area of non-shiny skin, Photoshop will only “heal” those shiny areas and will leave other areas completely untouched. This way it won’t heal areas of skin that it doesn’t need to, which can look obvious and often produces a smudged-looking result.
NOTEI’ve recorded a video on my YouTube channel where I take this technique a step further and show how to retain the skin texture. You can check it out at the following URL: bit.ly/tptb_skin
Like with most techniques in Photoshop, there’s more than one way to dodge and burn, but however you choose to do it, you have to be careful because it’s definitely one of those things you can get carried away with and before you know it, you’ve done way too much. That’s exactly why I choose to use the technique I’m going to show you in this section (Figure 4.104).
While we’re on the subject of dodging and burning, a few years back a retoucher friend of mine recommended a DVD set of training material that goes through dodging and burning pixel by pixel—seriously heavy stuff. After about 10 minutes of watching I couldn’t watch anymore because the instructor’s voice was so incredibly monotone that all I could think about was the scene in Ferris Bueller’s Day Off when the teacher keeps calling out “Bueller. . . . Bueller.” I told my friend I couldn’t watch it, but she convinced me to stick with it, saying the instructor does get into his groove and it improves. But, let me tell you, after four hours he didn’t!
Now I’ll never get that time back and I don’t want you to go through the same, so this technique is a lot simpler. It is nondestructive and produces great results, so let’s get started.
What we have now is a 50% gray layer at the top of the layer stack, but we can still see the lissy.jpg image. Why is that?
First of all, the reason we’ve added a new layer as opposed to either working directly on our picture or working on a copy of our picture is so that we can work nondestructively. The reason we’ve added 50% gray into this new layer is because we need pixels to dodge and burn (make brighter and darker), and a blank layer doesn’t contain any pixels. Because 50% gray is a neutral color, when we do the dodging and burning, we won’t see any color artifacts appear. We also use gray because with blend modes we can make it transparent and keep the pixels on the layer.
NOTEIt’s best to keep the Exposure setting fairly low so that you build up the effect gently. When dodging and burning, it’s easy to do too much without realizing it.
TIPTo see only the gray layer you’re working on, hold down the Alt (PC) or Option (Mac) key and click on the eye icon next to the gray (Dodge + Burn) layer in the Layers panel. This will turn off every other layer. To go back to the normal view, hold down the Alt (PC) or Option (Mac) key and click on the eye icon for the gray (Dodge + Burn) layer again. |
In Figure 4.111 you can see that the dodge and burn has been reduced by 50% on Lissy’s hair and nose, and has been completely removed from her mouth. You can also see how the area under her eyes was dodged (lightened) to reduce the dark areas.
I wanted to make sure to include this technique because it’s one that I have used more times than I care to remember. I call it the Never-Ending Lighting Rig because with this incredibly simple technique you can actually make it look as though you had more lights with you at the time of your photo shoot to light other areas in the picture. Of course, I’m not suggesting you use this technique instead of capturing it all in-camera, but there are times when, for one reason or another (usually time constraints), that’s not possible, and Photoshop can give us a helping hand.
As an example, we’re going to use a picture I took of my dear friend Tom and his gorgeous dog Ruby in one of the barns on his farm (Figure 4.114).
NOTEWe want to use a normal round, soft-edged brush for this effect, so make sure when you use the brush that there are no settings active in the Brush Settings panel.
TIPIf you want to add more light sources, rather than repeating these steps, simply duplicate the group by pressing Shift + Alt (PC) or Shift + Option (Mac) or dragging the group onto the Create New Group icon at the bottom of the Layers panel. |
The reason I love this technique is because of the Overlay blend mode. With Overlay, if the colors on the BLEND are lighter than the BASE, then they are screened. In this case, the Light layer is the BLEND, and with it being a white dot, the areas beneath it are screened (brightened), resulting in this fake light source. Handy, right?
In Adobe Camera Raw and Lightroom, you can use the Radial Filter to draw out an ellipse and adjust the exposure, shadows, etc., for a particular area in the picture; however, all that does is brighten that part of the picture. When you use a blend mode (in this case, Overlay), the light source reacts with the contrast and tone in the picture so the result is much more realistic. Like I’ve said before, it’s the small things that make the big difference when using Photoshop!
Before we jump into the Bonus Content chapter, I wanted to go through a superb technique using the Overlay blend mode. If you ever do cutouts and selections and use layer masks like I covered in chapter 2, you’ll absolutely love this!
Let’s say that we’re working on putting a composite together and we need to cut the tree in Figure 4.121 out from its original background so that we can use it in another picture.
If you don’t know how Color Range works, it’s basically a way to make selections based on color. If you choose the Eye Dropper Tool from the Color Range dialog and then click down directly onto the tree image, you will see some areas in the preview turn white. These are areas that are the same as the color directly underneath where you clicked, and these are the areas you are selecting.
For example, if I click on an area of green leaves, you can see areas that are the same shade of green represented in the preview in Figure 4.122. If I click on the sky, you can see it in the preview in Figure 4.123.
The Fuzziness slider is Photoshop’s way of being super friendly and saying, “Hey, I know you want the color you just clicked on, but if you move this Fuzziness slider to the right, I’ll add more colors in. If you drag it to the left, I’ll remove colors so that you’re selecting less area.” Get it?
Okay, let’s use this function to select the tree.
Now comes the magic of the Overlay blend mode . . .
Also, if there are areas that are gray but should be solid white, you can paint with a white brush set to the Overlay blend mode without affecting the black areas (Figure 4.132).
Using the Overlay blend mode makes it so that the brush will only affect gray areas, regardless of whether you’re painting on the layer mask in white or black. If you paint in white, the black is left alone, and if you paint in black, the white is left alone; only grey is affected.
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