TAILIEUCHUNG - Tài liệu Photoshop cs5 by Dayley part 34

điều chỉnh HSL Hình 8,21 cho thấy HSL / Grayscale bảng. HSL là viết tắt của Huế, bão hòa, và chói. Mỗi thiết lập một bảng điều khiển, và các thanh trượt màu sắc ở mỗi bên cho phép bạn thay đổi màu sắc trong các phạm vi màu sắc chính xác. | Chapter 8 Processing Photos in the Camera Raw Workspace Note The Input field tells you the actual value of the pixel you are adjusting the output field tells you what value you are adjusting the pixel to. It doesn t take long adjusting the Point curve before you can see that it is indeed more versatile but also much more difficult to control. Because I could add points to the curve the end result was better than I achieved with the Parametric adjustment as you can see in Figure . Notice that the background above the cliffs is much clearer because I added another point to the highlights. FIGURE The Points adjustment is more precise bringing out more detail. HSL adjustments Figure shows the HSL Grayscale panel. HSL stands for Hue Saturation and Luminance. Each setting has a panel and the color sliders in each panel allow you to make changes to the color in these precise color ranges. 233 Part II Working with Camera Raw Images FIGURE The HSL Grayscale panel Hue adjustments In this tab you can literally change the color in your images. Using the red slider you can change the reds in your image to bright pink or warm orange for instance. Each pixel in your image is assigned to one of the color ranges represented by the sliders. The brighter the colors are in your image the more visible these changes are. You can use the hue adjustments to give a photo a warmer or cooler feel or just to enhance or change specific colors in your image. Have fun playing with the colors but watch your skin tones they can be negatively affected. Tip Use the Default button found in each panel to reset the sliders to zero for that panel. Saturation adjustments The Saturation tab has the same color sliders as the Hue panel and not surprisingly they allow you to add to or reduce the saturation of the targeted color. You can use this as a more selective color enhancement than the Vibrance slider can give you or you can even create specialized images where only one or two .

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