Hello.
What's up friends? How are you?
My name is Emilio and you can find me at
www.emiliohernandezfotografo.com or on any of my social networks.
In the video we are going to
see how to give an extra touch of
focus on our photos using a high pass.
In previous videos we have already seen how to increase the focus of a
photo, give that extra touch of focus to the photo using, in that case,
an unsharp mask filter.
In today's case, we're going to do it with a high pass filter.
Then you will see how this high pass filter is not 100% accurate.
And we're going to learn how to perform a real high step.
Before starting, remind you that if a photo is out
of focus, no matter how much focus filter, too much
high pass filter that we use, we are not going to be able to refocus that image.
These types of filters are used to slightly increase the focus of
our images, but not to fix an image that came out out of focus.
And well, let's get down to business.
As you can see we are already in Photoshop.
This would be the work already done, we have
already given it that extra touch of focus.
And, this would be the original photo.
As always, the first thing we are going to do is delete the layer with the work
already done, we are going to send it to the trash and we are going to start.
Let's duplicate this layer.
We press 'Ctrol-J', so we have a copy of the original photo.
Let's come to 'filter-another-high-pass'.
Here what we have to do is move the only tensor we have: 'the radius'.
We can have it at a minimum in which it does not produce any effect
on the image, up to a maximum in which it would not produce either.
the desired effect.
To give this 'high pass' filter, we are going to set ourselves to the minimum of
the radius, the closest thing to zero that Photoshop allows us, which is '0.1'.
We are going to confirm that we have the
preview option enabled, so that according to
Let's move this tensioner, we'll see the result on the screen.
Well, as I told you, we are going to raise this tensioner...
As you can see, the edges of the flower begin to appear.
We continue climbing, the edges of the flower become more evident.
We keep going up
until they start to appear
these halos around the edges of the image.
At that moment what we have to do is go down
slightly and we are going to look for a situation
in which those halos are seen a little around the edge, slightly.
But it won't affect our final image.
We press 'Ok'.
I'm going to put this layer in blending mode: Overlay.
We would have already finished our work.
As you can see, I have the original image of our flower and on the
other hand, in this other layer, I have that extra touch of focus.
That extra touch of focus is very subtle, very soft, but in
Photoshop we will always try to work this way, giving small touches,
very subtle touches, very subtle changes that are barely
perceptible, but in the end, added together, they will achieve
great effects on the
image we are working on.
Well, although Photoshop offers us this high
pass filter, mathematically it is not exact.
It is not precise. Let's see it with an example.
I will hide the work already done
In the previous step, I am going to pass it below the background layer.
To do this I am going to unlock the background layer.
I'm going to call this layer 'background'.
I'm going to call layer one
'high pass filter'.
I am going to pass this layer below the background layer.
I am going to position myself on the background layer and I am going to obtain two copies of this image
by pressing 'Ctrol-J' twice.
I'm going to put these two layers in a group.
I'm going to hide the 'background copy 2' layer
and I'm going to position myself on the copy background.
To this layer I am going to apply just the opposite of what
the high pass would be, that is, I am going to apply a filter
of 'Gaussian blur'
and I'm going to give a value, for example 15.
I'm going to call this layer 'Gaussian filter'.
I am now going to position it on 'background copy
2', which I am going to call 'High Pass Filter'.
If the Gaussian filter is just the opposite of the high
pass filter, what I'm going to do is apply on this layer,
of course, a 'high pass' filter.
I am going to give the radius the same value that I have given to the 'Gaussian blur'.
That is, '15'. We press 'Ok'.
I'm going to put this layer in blending mode: 'linear light'.
I'm going to zoom in on the flower.
And if we hide 'Group 1', we see that
the image below is not exactly the same.
If I apply a filter and apply its opposite,
to the same extent, the composition of the two
layers should give us the background image.
And, as we see, that is not what is happening in this case.
As we see in the photo, without applying the group
and applying the group, they are not exactly the same.
I'm going to move away from the photo and as we see...
Definitely not. Both images are not the same.
There are authors who, to make them look more similar, lower the opacity of this
group more or less by half, thereby reducing the difference between the original photo
and when applying this group it is smaller.
However, as I tell you, it is still not the same.
However, you can use
the 'high pass' filter to
give extra touch of focus to the photograph.
But hey, since we're at it, let's see how to
make a 'Real High Pass', which we can also use
to give focus to our photos.
Just like we use the 'high pass' filter
that Photoshop offers us.
I'm going to hide the group we've been working with.
I'm going to pass it below the original photo.
Well, how to create that real high step?
Well, we are going to position ourselves on the background layer.
And we are going to get two copies by pressing 'Ctrol-J' twice.
We get 2 layers.
We hide the top layer and we are going to apply
a 'Gaussian blur' filter to the bottom layer.
We are going to look, as always, for a point where the texture
of the flower cannot be seen but its shapes can be seen...
According to what we are doing tests, that value would be around '15'.
Let's say 'ok'.
Now we are going to position ourselves on the 'copy 2' layer.
We are going to make it visible and we are going to come
to ‘Select image-apply image’.
We are going to put
the following values...
In layer we are going to select
the layer on which we have applied
‘Gaussian blur’ - Invert option checked - Mode
blending: Add - Opacity 100% - Key 2 - Offset 0.
These values ​​are
optimal for a 16.
which as you can see is the case of the image I am working with.
If this image were eight bits, the values ​​would be different, but
we will see this later in a video dedicated to 'Frequency Separation'.
We press 'OK'.
Let's put these two layers in a group, Select both
and press 'Ctrol-G'.
We are going to put the 'Background copy 2' layer in blending mode: 'Linear light'.
Now we hide this group that we just created and
as you can see there is absolutely no difference
none with the original image without this group.
Now we would have a high, real, mathematically exact step.
How to use this real high pass to give more focus to our photos?
Well, very easy, hiding or eliminating the 'background
copy' layer (the one with the Gaussian filter).
If we remove this layer,
'background copy 2', of the group and we hide the group.
I'm going to walk away.
There you have a 'real high pass', which gives a touch of extra focus to the image.
I'm going to call this layer 'Real High Pass'.
I'm going to bring into view the layer where
we applied the 'high pass filter' initially.
I'm going to put it on top, I'm going to hide one and the other...
And well, as you see, it also gives it a touch of extra focus.
However, if you notice, I put it in 'Overlay' blending mode.
I'm going to set it to 'Linear Light' blending mode.
so that they are on equal terms...
And there you have it.
This would be extra sharpening touch with the 'Photoshop high pass filter'
and this would be the touch of extra focus through the 'real high pass'.
Either of the two are valid for this task, you
can use either the 'Photoshop high pass filter'
as the 'real high pass', but I wanted you to see that it really
'Photoshop high pass filter' is not mathematically exact...
Although either method can be used
to increase the focus of the image.
Well, that's it for today's video.
I hope you liked it, and if you did, give me your
'like' and subscribe to the channel if you are not already.
See you in the next video. See you soon.