Tham khảo tài liệu 'photoshop cs quickstep - part 6', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | NOTE Overlay mode screens bleaches see Know When to Use Screen and Multiply Modes colors below the layer whose colors are brighter than 128 on the scale of 0-255 possible brightness values. At the same time Overlay multiplies deepens underlying pixels whose brightness value is less than 128. It s an interesting effect all by itself Screen Multiply and Overlay modes are covered in Know When to Use Overlay and Light Blend Modes later in this chapter. Here s a nice close-up photograph of some nachos but the lighting is a little cold. UICKSTEPS ADDING GRIT AND WARMTH TO A PHOTOGRAPH Let s make the nachos image or just about any food photography image more appealing for print and Web display. Follow these steps to add some stylizing warmth and a little Dissolve mode toning to an image 1. With your image in Photoshop click Create A New Layer . on the Layers panel to a larar I create a new blank layer on top of the image. By default this is the current editing layer. 2. Press D default colors so your foreground color swatch on the Tools panel is black. 3. Choose the Gradient tool. It s a painting tool and it works in Dissolve mode. 4. On the Options bar click the Radial Gradient button L1 - 0. Then click the Gradient Picker down arrow to the right of the gradient preset thumbnail and choose the second one foreground to transparent. Then choose Dissolve mode from the Mode drop-down list on the Options bar. Continued. I J Work with Lighten and Darken Modes Lighten and Darken modes are the flip sides of the same coin in Lighten mode the blend layer lightens only areas on the base the bottom layer or multiple layers that are darker and in Darken mode blend layer areas only darken underlying areas that are lighter than the corresponding area. Lighten painting mode is useful for brightening image areas without totally ruining image detail 1. Pick a neutral medium tone image color using the Eyedropper tool to sample. 2. Create a new layer above the base layer and choose Lighten
