Kontrast erhöhen ohne die Sättigung zu verändern | Photoshop Tutorial Deutsch

If you want to increase the contrast in a picture, you will quickly notice that the saturation of the colors is also automatically affected. We'll take a look at how we can deal with this problem in today's video. Of course, there are different ways to increase the contrast in a picture. If we go to the settings and then simply call up the adjustment that best fits the name, namely brightness and contrast, then we can of course take up the contrast slider here in the properties. And if we do that, we immediately notice that the contrast is increased, but also the saturation of the colors in the picture. So if we fade out the adjustment and fade in again, we see that a lot has happened here with the saturation, although we didn't want to change that at all. We are actually only concerned with the pure contrast. And this problem does not only occur with this classic contrast slider. I'm going to delete the layer here again and instead, for example, add the gradation curves. If we create a simple S-curve here in the gradation curves, i.e. reduce the dark areas a little, increase the light areas a little, then we also increase the contrast and here we also notice that not only the contrast has increased, but also the saturation of the colors has changed. Depending on the picture, this may not be so bad, but of course there are cases where this can be a bit problematic. Even in this picture, the whole thing seems to be quite oversaturated. Of course, you can now counteract this with other settings, but instead we just want to deal with the whole problem directly. And that works in different ways. The easiest method would be to change this adjustment level here with the gradation curves in this case from the mix mode. In the mix mode, we can switch from normal to pure brightness. And the mix mode that fits this would be luminance. We find it pretty far down here. If we go to luminance, we can already see that something is changing. If we now turn off the adjustment and fade in again, you can see that the saturation is no longer visibly influenced. It is really only the contrast that is increased in the picture. And that gives us the freedom to decide whether we want to adjust the saturation separately or leave it as it is. And it is not just automatically adjusted. In any case, a much better way, in my opinion. But before we look at an alternative method, I would like to show you a comparison. I mark both levels here and copy them with CTRL-J. Here are the upper two levels. This is the method that we have now looked at with the luminance. And here are the lower two. I put the adjustment back to normal. So we can now just look at the difference. If I fade out the upper level, we see that this is what it looked like with the conventional method. And this is what it looks like with our new method. Also the difference without adjustment, with adjustment. In contrast to the old method, without adjustment and with adjustment. A really extreme difference. And we can also look at this difference in the form of values. I find that very interesting in this example. If we go to our color selector, we can click on this symbol on the right. And then there is also the HSB color regulator. The reason I call it that is because we have a saturation regulator here. That means we get a saturation value displayed. If we zoom in very close to our image, we can find a pixel. Let's take this pixel on the right. I want to get the saturation of this pixel displayed. To do this, I fade out the adjustment so that I can see the original image again. This is the original image. If I click on this pixel with my pipette, I see that this pixel has a saturation of 48%. With the luminance adjustment, I click on the pixel again and we see that the saturation stays at 48%. So the saturation really hasn't changed. If I instead fade out this layer and fade in the original adjustment, that would be the lower layer here, which is still set to normal, you can see it. And I click on this pixel again. We notice that we are at 48% and now we are at 63%. This is a huge difference and the proof in numbers that this adjustment has a big impact on the saturation. That's it for the most important part. As promised, I want to show you an alternative. I opened this image a second time. There is an extra mode, which is perfect for adjusting the brightness without affecting the saturation. In Photoshop, this is a bit complicated, which is why I'm showing this as a second method. We can change the color mode for an image. On the top left of the image, there is a mode where we can change the color space from RGB to LAB. LAB is a different color space and in this color space, you can't use all the settings anymore. You can see that some of them have been removed. What is still possible, is that we can call up the gradation curves. In LAB color space, the gradation curves allow us to adjust the brightness separately. We don't have that available under RGB. Here in LAB, we have the possibility to adjust the brightness in the gradation curves and create an S-curve. Then you can see that the contrast is being adjusted without having an impact on the saturation of the image. As I said, it's a bit complicated, because we have to change the mode. If we want to go back to RGB, because we want to make more adjustments, we can do that by going back to image, mode and RGB. However, we either have to delete the adjustment layer, which we don't want, or we can reduce it, which means that it will be permanently applied to the image. The change is still there, we are now back in RGB. The problem is, we can't make any changes to it anymore. We permanently changed the image. That would be no more destructible work, as they say. Because the adjustment layer is now gone, as you can see. Another disadvantage is that image data can be lost when converting back and forth between the color spaces. That's why it's not recommended to switch back and forth all the time. But if you work in LRB anyway, it's a nice method. Still, I think it's interesting to know these ways, and to know that there is a possibility to increase the contrast without saturation. I hope that was understandable. If you want to support my work, I would be very happy if you check out the video description. There you will find the link to my detailed complete courses. That way you support me and this channel. I hope to see you again in one of my next videos.