How to CORRECTLY Match Skin Color. Color gradient
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- Опубліковано 9 бер 2020
- How to CORRECTLY Match Skin Color. Color gradient
Hello! In this video I will show you how to correctly match a skin tone. I will use function called Matching color gradient to reference in 3D LUT Creator.
There are tons of videos on UA-cam about matching a skin tone. Let’s consider main mistakes made by authors, which fundamentally will not allow you to accurately match the skin color.
The first mistake: the only average value is taken as a skin color sample! That is, according to some authors, the skin has uniform color. This would be true if their references looked like this:
In fact, a skin tone, its saturation, as well as color variability will change depending on brightness. The situation will only worsen if you copy a skin tone from a film frame where highlights are painted in one shade, and shadows in another.
Let me prove it to you with this example. I will select an area on the face so that highlights, midtones and shadows get into selection. I’m copying it to a new layer, selecting it again, now I’m going to Filters- Blur-Average. This is the average skin color. I’m going to load this color as selection in 3D LUT Creator. To do this, I’m holding Shift and clicking on Image from PS button. Thus, a picture with selection in alpha channel will be loaded from Photoshop. This is what the alpha channel looks like. Only selected area will get into the program analyzers. I’ll open Vectorscope. Let’s take a color sample. You need to choose Swatches’ Points in the View menu to see color swatches on analyzers. Left-click on Vectoroscope to increase the scale. Right-click to see side view. Since the selection border was blurred, the color from the image got into selection in addition to the main color after averaging. This can be seen on Vectorscope.
Therefore I select the area inside the average color and load it into 3D LUT Creator. See this point? I call it spherical skin tone in vacuum.
But what about the real world? I’m going to select the area on the face, but without averaging, and load it to 3D LUT Creator. I’m holding Shift and clicking Image from PS button.
This is how skin color actually looks. Let's see the top view. Here it is very clearly visible that the skin in the bright areas looks greener, and as it gets darker it becomes redder. You will get something in between when using the average value of the skin. This may work if your picture and reference looks similar, but not in this case. You will not get the correct skin color in highlights and shadows this way. This is perfectly visible on Vectorscope.
This was the first mistake.
The second mistake follows from the first: authors use RGB curves that match the only skin color value to the average reference color. This is why they adjust the skin tone only for midtones. I will show you the easiest way to do it: I will create a layer with curves, then I select the curves, and assign the average value of the skin tone to the middle eyedropper. In order to do this, I double-click on it, and then on the skin tone. I click OK, then click NO so that color is not saved, as a default color for eyedropper. I’m going to match this shot from the film, that most of you have probably watched. I’ll disable curves mask. Now I’m going to select the middle eyedropper and click on the midtones to match them to reference with curves. This is what I got… This is the third mistake. If your image and reference are very different in saturation, you will not be able to match the skin color using RGB-curves alone. The blue channel curve strongly clips to compensate for saturation. So we get the color porridge as a result. Here you need to separately adjust saturation, which, moreover, depends on brightness.
To get rid of these mistakes when matching skin color, the special tool was created for 3D LUT Creator. It allows you to transfer the color gradient exactly, and not just one average value of a skin color.
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I never miss an episode. Thanks for taking the time to post these.
I'm glad to do it!
amazing ❤
This is incredible. I gotta upgrade my software version
More on this topic please and thanks.
Love the text version of the tutorial. Next, highlight the key steps to make it easier to follow and duplicate the process. You have a unique and wonderfully capable tool. I look forward to new tutorials.
Thanks, Mike
You are welcome! Unfortunately text version for this tutorial was too long, so I have to escape the last part of it.
Excellent, great explanation! Thanks
Welcome!
Это то, что я искал годами!!!
These are ground braking controls. My favourite tool. I use all these for video.
Yes, video editors do not have so many color controls as photo editors, so 3D LUT Creator often helps to make color you want.
Mine doesn't have the gradient analyzer
LOL at that example video of a person with uniform skin tone🤣
It is very important to add the photos you use in the videos under the video.Because,People who try to learn 3D Lut Creator program will strengthen their learning to see the same effect by using the sample photo.Please add the photos you use in education to the link.
You can easily take a screenshot and use it to work it out. I believe hires images here aren't necessary at all
i have tried and watched your video many times but this application seems too complicated for me.
Vinh Đỗ Photoshop is way more complicated)