Photoshop gives you a live preview of the blur amount as you drag, and the HUD Heads-Up Display tells you the exact blur amount in pixels. I'm going to set my blur amount to 12 pixels:. See that thin, curved outer line that surrounds everything else? If you look closely, you'll see four small round dots around the line, one at the top, bottom, left, and right.
Leave a bit of room between the dot and the edge. The bottom dot will move outward along with it, pushing the bottom of the line down towards the bottom edge. Holding the Shift key as you drag makes it easier to drag vertically in a straight line:. Then, click on the dot either on the left or right side of the line and, again while holding Shift , drag it outward towards the edge of the photo, leaving a bit of room between the dot and the edge.
Moving one of the side dots will move the other along with it but in the opposite direction. This time, holding Shift as you drag makes it easier to drag horizontally in a straight line:. The area of the photo that falls between the center point and the transition dots is protected from the blur effect. Clicking and dragging any of the four dots will move all four of them together. Before we apply the blur effect to the image, select the Save Mask to Channels option in the Options Bar along the top of the screen.
Even though it seems like we haven't been using one, Photoshop has been busy creating a layer mask for us behind the scenes as we've been working in the Blur Gallery, and by choosing this option, we'll actually be able to use the layer mask when we're done:.
Here's what my photo looks like so far:. Now that we're back in Photoshop's main interface, switch over to the Channels panel by clicking on its name tab. By default, Channels is grouped in beside the Layers panel:.
You'll find the layer mask we just created saved as an alpha channel named Blur Mask below the Red, Green, and Blue channels. We need to load this Blur Mask channel as a selection in our document. Switch out of the Channels panel and back over to the Layers panel when you're done by clicking on the Layers name tab:. With the selection active, go to the Adjustments panel and click on the Levels icon second from the left, top row to add a Levels adjustment layer to the document:.
The new Levels adjustment layer appears above Layer 1 in the Layers panel, and because we had a selection active, Photoshop used the selection to create and define a layer mask for the adjustment layer, as we can see by looking at the layer mask thumbnail. Blurs an image while preserving edges. This filter is useful for creating special effects and for removing noise or graininess.
The Radius option specifies the size of the area sampled for the blur. The Threshold option controls how much the tonal values of neighboring pixels must diverge from the center pixel value before being part of the blur.
Pixels with tonal value differences less than the Threshold value are excluded from the blur. Like the Artistic filters, the Brush Stroke filters give a painterly or fine-arts look using different brush and ink stroke effects.
Some of the filters add grain, paint, noise, edge detail, or texture. All the Brush Stroke filters can be applied through the Filter Gallery. Accented Edges. Accentuates the edges of an image. When the edge brightness control is set to a high value, the accents resemble white chalk; when set to a low value, the accents resemble black ink. Angled Strokes. Repaints an image using diagonal strokes, with lighter and darker areas painted in strokes going in opposite directions.
Preserves the details and features of the original image while adding texture and roughening the edges of the colored areas with simulated pencil hatching. The Strength option with values from 1 to 3 determines the number of hatching passes. Dark Strokes. Ink Outlines. Replicates the effect of a spatter airbrush. Increasing the options simplifies the overall effect. Sprayed Strokes. Paints an image in Japanese style, as if with a fully saturated brush applied to rice paper.
The Distort filters geometrically distort an image, creating 3D or other reshaping effects. Note that these filters can be very memory-intensive.
Diffuse Glow. Renders an image as though it were viewed through a soft diffusion filter. The filter adds see-through white noise, with the glow fading from the center of a selection. Uses an image, called a displacement map , to determine how to distort a selection.
For example, using a parabola-shaped displacement map, you can create an image that appears to be printed on a cloth held up by its corners.
Makes an image appear as if it were being viewed through different types of glass. You can choose a glass effect or create your own glass surface as a Photoshop file and apply it. You can adjust scaling, distortion, and smoothness settings. When using surface controls with a file, follow the instructions for the Displace filter. Ocean Ripple. Squeezes a selection.
Does not work on images larger than px by px. Polar Coordinates. Converts a selection from its rectangular to polar coordinates, and vice versa, according to a selected option. You can use this filter to create a cylinder anamorphosis—an art form popular in the 18th century—in which the distorted image appears normal when viewed in a mirrored cylinder.
Creates an undulating pattern on a selection, like ripples on the surface of a pond. For greater control, use the Wave filter. Options include the number and size of ripples. Distorts an image along a curve. Specify the curve by dragging the line in the box. You can adjust any point along the curve. Click Default to change the curve back to a straight line. In addition, you choose how to treat undistorted areas. Gives objects a 3D effect by wrapping a selection around a spherical shape, distorting the image and stretching it to fit the selected curve.
Rotates a selection more sharply in the center than at the edges. Specifying an angle produces a twirl pattern. Works much as the Ripple filter does, but with greater control. Options include the number of wave generators, wavelength distance from one wave crest to the next , height of the wave, and wave type: Sine rolling , Triangle, or Square.
The Randomize option applies random values. You can also define undistorted areas. Distorts a selection radially, depending on the radius of the pixels in your selection.
The Ridges option sets the number of direction reversals of the zigzag from the center of the selection to its edge.
You also specify how to displace the pixels: Pond Ripples displaces pixels to the upper-left or lower right, Out From Center displaces pixels toward or away from the center of the selection, and Around Center rotates pixels around the center. The Noise filters add or remove noise , or pixels with randomly distributed color levels. This helps to blend a selection into the surrounding pixels. Noise filters can create unusual textures or remove problem areas, such as dust and scratches.
Applies random pixels to an image, simulating the effect of shooting pictures on high-speed film. You can also use the Add Noise filter to reduce banding in feathered selections or graduated fills or to give a more realistic look to heavily retouched areas. Options for noise distribution include Uniform and Gaussian. Uniform distributes color values of noise using random numbers between 0 and plus or minus the specified value, creating a subtle effect.
Gaussian distributes color values of noise along a bell-shaped curve, creating a speckled effect. The Monochromatic option applies the filter to only the tonal elements in the image without changing the colors. Detects the edges in an image areas where significant color changes occur and blurs all of the selection except those edges.
This blurring removes noise while preserving detail. Reduces noise by changing dissimilar pixels. To achieve a balance between sharpening the image and hiding defects, try various combinations of Radius and Threshold settings. Or apply the filter to selected areas in the image.
See also Apply the Dust And Scratches filter. Reduces noise in an image by blending the brightness of pixels within a selection. The filter searches the radius of a pixel selection for pixels of similar brightness, discarding pixels that differ too much from adjacent pixels, and replaces the center pixel with the median brightness value of the searched pixels.
This filter is useful for eliminating or reducing the effect of motion on an image. Reduce Noise. Reduces noise while preserving edges based on user settings affecting the overall image or individual channels. The filters in the Pixelate submenu sharply define a selection by clumping pixels of similar color values in cells. Color Halftone. Simulates the effect of using an enlarged halftone screen on each channel of the image. For each channel, the filter divides the image into rectangles and replaces each rectangle with a circle.
The circle size is proportional to the brightness of the rectangle. See Apply the Color Halftone filter. Clumps pixels of solid or similar colors into blocks of like-colored pixels. You can use this filter to make a scanned image look hand-painted or to make a realistic image resemble an abstract painting. Creates four copies of the pixels in the selection, averages them, and offsets them from each other. Converts an image to a random pattern of black-and-white areas or of fully saturated colors in a color image.
To use the filter, choose a dot pattern from the Type menu in the Mezzotint dialog box. Clumps pixels into square blocks.
The pixels in a given block are the same color, and the colors of the blocks represent the colors in the selection. Breaks up the color in an image into randomly placed dots, as in a pointillist painting, and uses the background color as a canvas area between the dots. The Render filters create 3D shapes, cloud patterns, refraction patterns, and simulated light reflections in an image. You can also manipulate objects in 3D space, create 3D objects cubes, spheres, and cylinders , and create texture fills from grayscale files to produce 3D-like effects for lighting.
Generates a soft cloud pattern using random values that vary between the foreground and the background colors. When you apply the Clouds filter, the image data on the active layer is replaced. Difference Clouds. Uses randomly generated values that vary between the foreground and background color to produce a cloud pattern. The filter blends the cloud data with the existing pixels in the same way the Difference mode blends colors. The first time you choose this filter, portions of the image are inverted in a cloud pattern.
Applying the filter several times creates rib and vein patterns that resemble a marble texture. When you apply the Difference Clouds filter, the image data on the active layer is replaced. Creates the look of woven fibers using the foreground and background colors. You use the Variance slider to control how the colors vary a low value produces long streaks of color, and a high value results in very short fibers with more varied distribution of color.
The Strength slider controls how each fiber looks. A low setting produces a loose weave, and a high setting produces short, stringy fibers. Click the Randomize button to change how the pattern looks; you can click the button a number of times until you find a pattern you like. When you apply the Fibers filter, the image data on the active layer is replaced. Simulates the refraction caused by shining a bright light into a camera lens. Specify a location for the center of the flare by clicking anywhere inside the image thumbnail or by dragging its cross hair.
Lighting Effects. Lets you produce myriad lighting effects on RGB images by varying 17 light styles, three light types, and four sets of light properties.
You can also use textures from grayscale files called bump maps to produce 3D-like effects and save your own styles for use in other images. Sharpen and Sharpen More. Focus a selection and improve its clarity. The Sharpen More filter applies a stronger sharpening effect than does the Sharpen filter. Sharpen Edges and Unsharp Mask. Find the areas in the image where significant color changes occur and sharpen them. The Sharpen Edges filter sharpens only edges while preserving the overall smoothness of the image.
Use this filter to sharpen edges without specifying an amount. Note that the edges of the selected area contain colors from the surrounding areas, which may produce a fuzzy or feathered outline. To avoid this remove cut out the surrounding area first, blur, then paste the surrounding area back into place which will likely create a hard edge unless you slightly blur the edges of the cut-out area as well.
First, we changed the Color Balance to make the glasses look like sunglasses. We used the Gaussian Blur at a Radius of 10 to blur the eye with the glass lens.
Then we used the Gaussian Blur at a Radius of 50 to slightly blur the background enough to showcase the girl, but still maintain a hazy view of the city and the fence behind her.
The client loved it! Lens Blur: Use this filter to adjust the depth of field on your photos—for example, to blur out a cluttered background or enhance a fuzzy background. This powerful filter provides 14 levels of adjustable effects, including six shapes and several depth map selections.
You have greater control over the final results of your image because you can fine-tune so many effects. Check out the red rose in figure We set the Blur Focal Distance to For the Highlights, we did Brightness 10 and Threshold The Noise was set to 3 with Uniform Distribution. The beautiful red rose looks like velvet on a background of green sand. Motion Blur: The Motion Blur does exactly what you would expect—it creates the illusion of motion.
Settings include the angle of the motion from zero to plus or minus degrees and the distance of the spreading pixels—that is, how far the image is stretched to emulate the movement. For our example, we used a dancer leaping through the air see figure We chose an angle of 22 degrees, so she would appear to be moving forward and up. For the distance, we chose pixels, so she would be just blurred enough to replicate motion without reducing her image to blurred lines.
Radial Blur: The Radial Blur is used to create a circular distortion around an object, which can be targeted or applied to the entire image.
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