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In the previous exercise we saw the effects of reducing the Opacity and Fill Opacity where the Burn and Dodge modes are concerned. We didn't actually see Color Dodge, but you can experiment with that on your own. In this exercise we're going to see the second half of the Fill Opacity Eight. Those include, these three contrast modes right there Vivid Light, Linear Light, and Hard Mix, as well as one of the inversion modes, Difference. So Exclusion is not part of the Fill Opacity Eight FYI. Anyway, I'm going to switchover to this updated sample file.
It's called Fill opacity demo.psd. It's found inside of your 28_blending folder. It's nothing really to look at here, but it's got these layer Comps ready and waiting. So I'm going to click in front of Opacity blend in order to make it active. So we have the reduced Opacity value of 50% and with the sunlight layer active, I'm going to press Shift+Alt+V or Shift+Option+V on the Mac to switch to the Vivid Light mode and it is just ugly. When set to a reduced Opacity value, we have these terrible color transitions going on inside of her hair, and then these weird sort of pale green streaks in her face, some color modeling in her dress, and so forth.
Anyway, I'll go ahead and update that layer comp by clicking on the Update button. Then I'll click in front of Fill blend, which takes us back to the Linear Dodge mode in this case, set to a Fill Opacity of 50%. I'll press Shift+Alt+V for it too, Shift+Option+V on the Mac. It looks great, same mode by the way, much different effect. I'll go ahead and update that layer comp, so that we can properly compare the effects. This is a reduced Opacity version of Vivid Light. This is a reduced Fill Opacity version of Vivid Light. I don't think there is any two ways about it.
The later is better. So again, when you're working with the Fill Opacity 8, experiment with the Fill value first, rather than the Opacity value. So that's pretty remarkable. You can experiment with Linear Light as well, if you like. However, we're going to drop down to Hard Mix. So I'm going to click in front of Opacity blend once again. Then I'll press Shift+Alt+L for the least of them, Shift+Option+L on the Mac. There it is. Hard Mix set to 50% Opacity. What a train wreck. Anyway, let's go ahead and update that layer comp.
Now I'll switch to Fill blend, and you're not even going to believe that this is the same blend mode, Shift+Alt+L or Shift+Option+L on the Mac. That's Hard Mix. There it is. Hard Mix set to a reduced Fill Opacity value. I'll go ahead and update that layer comp as well. Just for the sake of comparison, I think you probably remember what you saw before. But here it is, that's Hard Mix. That is Hard Mix, at its ever loving worse there with an Opacity value of 50%. There it is with the Fill value of 50%.
Now you can actually take this Fill value pretty high with Hard Mix. Recall that if I press Shift+0 at this point, in order to raise the Fill Opacity to a 100%, we have this threshold effect on a channel by channel basis. So we're left with at most eight different colors inside of the image, and some incredibly jagged transitions. But if I press Shift+9 to reduce the Fill Opacity to 90%, notice that we start smoothing out the transitions almost right away.
This is Shift+8 for 80%. This is Shift+7 for 70%, and so on. I'll press Shift+2 for 20%. Look at that. Look how nice that looks. I'll go ahead and turn off the sunlight layer for a moment. She appears a little pinkish. Now when I turn it back on, she warms up significantly. It's a very subtle effect and yet, this is Hard Mix. Well, we'll to do the same thing with Opacity. Let's go ahead and compare that. I'll update the Fill blend there. I'll switch back to the Opacity blend. I'll press the 2 key to reduce the Opacity to 20%.
We'll just give a weaker version of that horrible threshold effect. That's it. So I'll go ahead and update that. However, when we throw Fill into the mix, we actually soften the transitions. Why? What's going out with the math? I have no idea. I just know that it works. All right, and finally, there is a big difference with the Difference mode as well. Let's switch back to the Opacity blend comp. I'm going to press the 5 key to raise that Opacity value up to 50%. Then I'll press Shift+Alt+E or Shift+Option+E on the Mac to apply Difference.
We're only doing a half inversion, so as a result we're losing luminance levels like crazy. In fact, most of those luminance levels are piling up around gray. So it's an awful effect. I'll go ahead and update it. Now let's switch to Fill blend. I'll press Shift+5 to raise that Fill value to 50%. I'll press Shift+Alt+E or Shift+Option+E on the Mac in order to apply the Difference mode and we get this effect here. Still has a lot of contrast in it. I'll go ahead and update that comp. A lot of contrast going on, so no contrast with an Opacity level of 50%, whereas, lots of contrast still left with a Fill value of 50%.
So that gives you a sense of just how powerful that Fill Opacity value can be with those eight blend modes, eight and only eight. It makes no difference with your Multiply and your Screen, and all the rest. Just those over the top blend modes are affected and they are affected well.
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