Subtitles of the Movie

The problem with the Shadow-Highlights Adjustment is that the increase in visibility of detail in the Shadows and Highlights results in less contrast being available for the middle tones, and that can make your image look muddy. Let's look at this demo image. I'm going to have to say OK and let that process for a minute. Let's look at this demo image in order to see what happens when we apply different settings of Shadow and Highlight. On this layer I've applied Highlight settings using an Amount of 45, a Range of 20, and Radius of 10, and you can see that it's darkened my Highlight values and in general that might help. But there's a little less Contrast available between these tones, but not bad. Here I've used a Highlight Amount of 25, Tonal Range of 30, and Radius of 25 and you can see that then there's a little less difference in these tonalities. On this one, I've used a Shadow setting of 50 percent for the Amount and Tonal Range, and Radius of zero, and you can see we've lost the differentiation between a huge range of our middle values. This could be a tremendous problem for an image. In this one I still have the Amount set at 50, but I've got the Tonal Range set back to 15, and the Radius to 25. That returned some of the differentiation in the middle tones, but this range in here has still lost a lot of detail. And here I've used Shadow Amount of 25, Range 35, and Radius 25 and again, you can see we have middle tones that have almost no differentiation, and the same here which just has a lower Tonal Range. I think you can see that it's very easy to cause trouble for your image in the middle tones, which is why it's important to limit the effect to just the Tonal Width that you need. Additionally you can increase the Midtone Contrast setting in the Shadow-Highlights dialog and the Color Correction Slider. The Color Correction helps restore some Saturation to pixels that have become less contrasty. Using Shadow-Highlight carefully can reveal great detail in the darkest and lightest areas of your image, as long as that information was captured by the sensor and exists in your file. It won't reveal detail that isn't there, and shouldn't be used to adjust the overall exposure of the image. Use it wisely and it will help add impact to your images. Here's this image with Shadow-Highlight, and here it is without. Obviously it was much better with Shadow-Highlight applied.