tailieunhanh - Customize Photoshop for Your Projects- P4

Customize Photoshop for Your Projects- P4: Using Photoshop CS5 you can improve photographs, repurpose them, or start with a blank canvas to create original designs. Because printed images and Web images have different limits on the range of colors that they can represent, you need to set the working color space for your project. | Add a vignette effect to FOCUS ON THE SUBJECT A dark vignette around the edges of a photograph is often due to the light falloff in the camera lens. Intentionally darkening the edges of an image can help focus the viewer s eye on the subject. For other images a darkened edge can simulate the look of an old photograph. Used on a portrait a dark vignette can create a more dramatic look and a light vignette can create an entirely different image. With a landscape you can simulate a burned-in edge essentially enhancing the center of the image. You can remove a camera lens vignette or create a vignette effect in many ways with Photoshop. Most methods involve separate layers and multiple steps. Controlling the vignette in Camera Raw offers more flexibility. You can easily add either a lighter or darker edge to an image and the vignette can even be appropriately applied to a cropped image. Also when you apply or remove the vignette in Camera Raw the pixels in the file are not altered. O Open an image in Camera Raw as described in task 56. 2 Click the Lens Corrections tab. 3 Click and drag the Amount slider to the left for a dark-edged vignette effect. Note You can optionally click and drag the Amount slider to the right for a light vignette or to correct an unwanted dark vignette. 4 Click and drag the Midpoint slider to control how far the darkened areas extend into the photograph. 5 Click Open Image to open the file in Photoshop for final editing or output. flChapter 7 I k. Add action with a SIMULATED MOTION BLUR You can add a sense of movement to action shots by using a filter to simulate the motion of the subjects. Photoshop includes a number of blur filters including one for motion blur. Unlike the Gaussian Blur filter which blurs pixels in clusters the Motion Blur filter blurs pixels in both directions along straight lines. You can choose the angle of movement and the distance in pixels that are affected by the blur in the filter dialog box to simulate both the .