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We've already entered Wonderland in the Pattern Pens movie. Now we're going to go a little bit deeper into the rabbit hole by visiting the Image Hose category. The Image Hose works in conjunction with nozzle files, which are ordered content that is sprayed from the hose in a variety of methods. Anything can become nozzle content. And the mind reels. Let's visit the land of hoses and nozzles. So we're going to be working in the Image Hose category and I'm going to work with a Spray variant, which Size is controlled by Pressure and Angle is controlled by Randomness.
I'm not going to spend a lot of time on the standard usage of Image Hose but instead I want to use this video to show you something that isn't well known about the way it works. A property that's very useful but it is kind of buried. So to do this, we're going to work with this image and I'll temporary create a layer here. So I'm going to spray with the current nozzle file, which is Bay Leaves, and we'll just paint with it a little bit so you can see what we've got here. So this is your basic set of photographic elements being sprayed out randomly onto the layer above the background.
So that's the way it normally works but let's look up at the Brush Property Bar and you'll notice that there is a Grain setting here but in reality, Grain has nothing to do with the Image Hose. It doesn't have any control over it whatsoever. So here is this apparently useless control sitting here. Because of the way the interface works in Painter, sometimes you have to assign a function to an area of the interface without being able to label it. And this is such a case. Because this slider actually does something other than control grain and I'm going to turn it down a little bit and let's see if we get a difference here.
Okay, well now, we're not getting the same saturated colors. Somehow white is entering into the equation and where is that coming from. But if we go over to the Colors palette and take a look at it, you'll see the secondary color square here is white right now. Let's take that and change it to another color and now I'll spray. Now, it makes a little bit of sense. What's happening is when you turn the Grain slider down when you're in the Image Hose it starts to impart the secondary color into the content of the Image Hose.
So depending on where this is set, you can skew the content with more or less of a color. The reason this does this is back when we originally designed this, we thought it would be kind of interesting to be able to use the same content but add a color to it so that we could, for example, give the illusion of shadowing happening. So in this case, this is a bit like a shadowed version of the Bay Leaves and then when I turned my Grain back up to 100%, now I've got my fully sunlit leaves.
And so it's just a way to introduce some more variability into what is really one set of content and that's the original usage for this. But I'm going to show you another way to take advantage of this and to do this, I'm going to go ahead and fill this layer with white and I'm going to set the background color to black. Now when I paint with this, when I turn down the Grain, we're going to get this.
I'm getting this very nice silhouette based on the Bay Leaves. So all of a sudden, we don't have color content but we have a silhouette of all of these various leaves being sprayed out onto our layer. Well, if we go and change the Composite method to Screen, what happens is the white remains opaque but the black becomes transparent and so this gives me a really nice tool for vignetting and it especially works well in this image because leaves are in the content of the original image and we've got this nice set of leaves that we can spray out and use it as a way to bring through the underlying content.
So this is a great tool for being able to create vignettes with very interesting graphic edges that would be otherwise kind of difficult to do. So this isn't a huge feature of the Image Hose but it's something that was hiding in plain sight and most people are not aware of it, due to the fact that this Grain slider actually is controlling how much of this color, the secondary color in the Color palette, is going to run through the Image Hose. And by turning it down to 0, I've got a way to apply black, which in this case is actually transparent in conjunction with the Screen method.
So it's kind of connecting a few dots that aren't obviously there, but once you understand all the dots and connect them, you can get a very interesting result.
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