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- Now I'm going to teach you
something called a reaction diffusion,
I'm going to teach you how to make it in Photoshop.
So reaction diffusion is something
that I have recently been using in a lot of my work,
and it's very cool because it has
this very subtle effect,
that just makes the image just more richer.
So rather than having a plain background,
I make this reaction diffusion
I put in the background by making very subtle,
and we're going to bring that to life
in here using Photoshop actions.
And these actions are really just three steps.
And once you make them,
you can have them saved forever.
And you can make these patterns as often as you'd like.
So now we're going to make a new document.
So 2048 pixels by 2048 pixels.
With the resolution of 300,
we're going to press Create.
And now the first thing you want to do
is click on your paint bucket tool.
And we're going to make the background black.
And we are going to use our brush.
And I'm going to make sure that our brush
is hard round, and we are going to make white dots.
I'm going to using my bracket keys
to make them a little bit bigger.
And now all we're going to do is just click around.
The more dots you make,
the better your reaction diffusion will look.
And be prepared depending on how fast
your computer works, this could take some time.
But once you make that action,
it will be a lot easier.
But if your computer is very slow,
it might still take some time to finish,
but the end result is worth it.
So now we're going to make an action.
And pretty much what a Photoshop action is,
is it records what you're doing,
and saves it so that in the future,
you can redo what you did.
But you don't have to do it every time.
So, let's say I'm making something
and it takes me five clicks to make it,
I can record that as an action,
so the next time I want to make that same thing,
I just press the action and does it for me.
So kind of saves time.
And especially with this, we're going to have to do
these three repeated steps over and over and over again
to get the desired effect.
But having an action allows me to click it once
and it does those three things for me very quickly.
So right now we're going to make a folder
and we're going to call it Skillshare Reaction Diffusion.
And then next, we're going to click down here,
this is where you're actually making a new action.
So now I'm going to call this RD,
which stands for reaction diffusion.
And once you press record,
that means it's going to record everything you're doing.
So make sure that you don't make a mistake
when you're recording, because if you do,
you're going to have to start all over.
So I'm going to press record,
and once you see this red thing down here
it means it's recording everything you're doing.
So right now the first thing we're going to do
is we're going to go into Filter, other,
click on High Pass.
And you want to make sure your radius
is around six or 6.6.
I'm going to press OK.
Now I'm going to go into image adjustment,
click on Threshold.
And you want to have your threshold around 128.
or whenever you have big black rings.
If your rings end up turning white,
you have done this wrong.
So make sure that your rings are black.
So 128 is the number that I have for this
So I'm going to press OK.
And then next I'm going to go into Filter, Blur,
and I'm going to click on Gaussian Blur.
And I usually like to have mine around six as well.
So as you can see, it is now recorded
all of the actions that we just did.
Now I'm going to press stop.
So as you can see, the radius are recorded that
the threshold they recorded that
and the Gaussian Blur it recorded that.
Now if I click on RD and press play,
it does all of these three things for me again,
and if I keep pressing play,
it will keep repeating these steps
over and over and over
and you will start to see a desired effect.
So as you can see,
now my shapes are changing into a very nice pattern
and is looking really nice.
And if you click on it for a while,
you start to actually see the change
happening in real time.
So I'm going to keep pressing play,
and once it fills the screen,
I'm going to show you what to do next.
Cause right now it looks very blurry
and I'm sure you guys are wondering
how can I make this clear?
Well all you have to do,
once you have this you go into Filter,
go to Sharpen and click on Sharp Mask
and take this amount all the way to 500.
And now you have this fake sharpness
cause if you zoom in is really not sharp.
But if you zoom out, it looks very sharp.
So now that we have this,
we're going to bring this into Skillshare poster
and I'm going to show you how to do that.
Two ways to do it,
you could use the Adobe Creative Cloud Library.
So I can go in here and click on libraries.
And I could literally just click this
and drag this in here.
And that's the easiest way for me.
And so now that I have this saved in here,
I can always use it in the future,
or you can save it to your computer
and just drag it in here.
But now that I have it in the cloud,
I'm just going to drag it in.
And now I have this perfect square that fits.
So I'm going to just make it a little bit bigger.
Okay, and now we want to make sure
that this is at the bottom.
So make sure it is at the bottom.
So now we have this very nice effect here.
Okay, now what I'm going to do
is I'm going to make a new layer,
and I'm going to sample a color.
So I'm going to click on my Eyedropper Tool right here,
I'm probably going to sample like a blue-ish color.
And I'm going to go into my bucket,
my paint bucket tool,
and I'm just going to click on the background.
And now we have this background.
Now, if I click on the blending modes,
and what this does is that it gives the color blending mode,
and it just has different effects.
And so what I'm going to do is I'm going to use screen,
I'm just going to reduce the opacity
of the reaction diffusion.
And so now you can kind of see it very subtle,
which I like because remember,
we don't want to take attention from the subject.
The subject is him and all of these stuff
just has to focus and bring people's focus on him.
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