Hi.
Welcome back to the photoshoptrainingchannel.com.
I'm Jesus Ramirez.
In this video,
I'm going to show you how to invert luminosity without affecting color in a photo.
There's also questions submitted by a user named Jonathan, and I thought that it would
make a great tutorial.
In fact, I'm going to start doing that more often.
I'm going to take your interesting and challenging questions and make tutorials out of them.
The goal is to make tutorials that you really wouldn't see anywhere else.
I'm actually starting up playlists on my YouTube channel.
It's called New Photoshop Techniques From Your Questions.
I'll place the link to that playlist right below in the description.
Right now, you'll only see two tutorials: this one, and one that I've done on detail
masking, which is a question that I received while giving a live presentation, and you
can see part of my live presentation in that video as well.
But, what I'm really trying to do is come up with tutorials that you won't see anywhere
else, and that also helps solve interesting and challenging questions.
So, feel free to post your interesting, challenging questions in the comments.
You can email me or on social media.
Obviously, I won't be able to get to all of them, but I'll try to do as many as I can.
So, keep that playlist in mind because that's where I'm going to place all these types of videos.
Anyway, let's get started with this tutorial.
So, the question basically was, how can we invert luminosity without affecting color?
First, let's take a look at what inverting does.
So, you can invert an image by simply pressing control-I, command-I in the Mac, and the image inverts.
Now, that is a destructive effect.
If you want to invert non-destructively, you can create an invert adjustment layer, and
that inverts all the colors and luminosity.
But of course, the question was, I only want to invert luminosity, so the shadows and highlights,
but leave the color alone.
How can you do that?
Well, I thought of two ways of tackling that problem.
Number one is by creating a curves adjustment layer.
With the curves adjustment layer, we can click on the black point and drag it all the way
to the top, and then click on the white point and drag it all the way to the bottom.
That gives us the same effect as inverting the image, but again, the problem is that
we want to only affect luminosity, and the way that we can do that is by using a blending mode.
So, if I click on the blending mode dropdown and select the luminosity blending mode, you'll
see that we'll keep the original colors, but we only invert luminosity.
So, that's how you can invert luminosity without affecting color.
By the way, if you're not familiar with blending modes, then I have a video that covers every
single blending mode and what it does.
So, I highly recommend watching it if you're new to blending modes.
I'll place a link to that tutorial right below in the description.
The second technique that I came up with to solve this problem was to use a different color mode.
So, let me delete the adjustment layer, and I'm going to go into image, mode, and select
the LAB color mode.
I'm not going to merge, so now we're working on the LAB color mode, we're no longer working
with RGB, and the LAB color mode gives us different channels.
We have the lightness channel, which controls luminosity, the A channel, and the B channel.
If you want to learn more about how the LAB color mode works, then watch my video, Five
Photoshop Tips, and Tricks For Photographers.
I explain how the LAB color mode works in that video, so check it out.
I'll place the link right below in the description in case you're interested.
But, anyway, in this case, we can select the lightness channel, which again, is the luminosity,
and simply press control-I, command-I, to invert.
That inverts the luminosity, but the color information, the A and B channel, is unaffected.
So, when we go back into the layers panel, you'll see exactly the same result that we
had with the curves adjustment layer.
But anyway, I hope that you enjoyed this tutorial.
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Leave your questions down in the comments below, and I will see you at the next tutorial.