作者xyzk　  出处:Iconfans


先看看最终效果




以下是详细的photoshop教程步骤:
Step 1

Createa new document in photoshop. As usual I will use a nice screeresolution, 1920x1200 pixels. Fill the background layer with a verydark grey, not black. If you fill it with black the effect won't work.The color I used was #262626.

第1步

在photoshop中创建新文档，大小是1920x1200，背景层填充一个较深色的灰，注意要是深灰色，不能纯黑，否则无法出效果。比如可以填个#262626。





Step 2

Selectthe Ellipse Tool (U), and create a circle. Use black for the color, andgo to Layer Layer Style Blending Options. Change the Fill Opacityto 50%. After that select Stroke. Use 10 pixels for the size, Insidefor the Position and Black for the color.

第2步

选形状工具(U)里面的椭圆，在新图层中用黑色画一个正面，在图层填充不透明度为50%。设置图层描边效果，大小10像素，位置内部，颜色黑色。





Step 3

Select the ellipse and go to Edit Define Brush. Name your brush and that's done. Now we have a new brush ;)

第3步

隐藏背景层，椭圆层处选中状态，选择“编辑”菜单-“定义画笔预置”，取个名，按确定，这样就定义好了一个新的笔头。




Step 4

Go to Window Brushes (F5). The first thing to do inthe Brush Engine is to select our new Brush. The size won't matterbecause you will change that when you use it. The Spacing, however, isvery important. Chage the value to 100%. After that, select the ShapeDynamics, then Scattering and Other dynamics. For the values use theimage below.

第4步

选择画笔工具，F5打开画笔面板，笔头设置成刚才定义的新笔头，大小随意因为我们可以随时更改。“画笔笔尖形状”里面的“间距”设置100%。“形状动态”“散布”和“其它动态”的参数按照下图设置。





,                                            Step 5

Beforewe start painting our bokehs let's create a new layer and fill it witha colorful gradient. I created a new layer and used the layer styles todo that but feel free to do the way you are used to. My gradientsettings are as follows: Blend Mode is Overlay, Opacity is 100%, Styleis Linear, and the Angle is 45º. The colors I used are: Yellow(#00085), Cyan (#1bdaeb), Purple (#9b3b81), Orange (#d27e34).

第5步

隐藏椭圆图层，打开背景层。在进行喷绘这前，我们来创建一个新图层，随便填个色彩。接着使用图层效果的渐变叠加，渐变的设置如下：渐变混合模式是叠加，不透明度100%，样式是线性，角度45，使用的颜色：黄(#00085),青(#1bdaeb),紫(#9b3b81), 橙(#d27e34)。





Step 6

Let'screate a new Folder in our Layer Palette. Rename the folder to Bokehsand change the Blend Mode to Color Dodge. Then create a new layer,choose white for the color and select the Brush Tool (B). Now justpaint some ellipses with our custom brush. For this first layer use abig size, like 500-600px.

第6步

让~我们~在渐变图层底下新建一个图层组，取名是“Bokehs”，更改混合样式为“颜色减淡”。再在图层组里面建新图层，设置前景色为白色，选画笔工具，大小可以设置在500-600像素，然后可以开始喷绘。





Step 7

Go to Filter Blur Gaussian Blur. For this first layer use 20 pixels for the Radius.

第7步

选择滤镜-模糊-高斯模糊，半径是20像素。




Step 8

Create another layer and paint more brushes. This timehowever use a smaller size for the brush. After that go toFilter Blur Gaussian Blur. Use 4 pixels for the Radius.

第8步

在图层组里再新建另一个图层，这次选个小点的笔头，继续喷啊喷~！。然后再加上高斯模糊，半径是4像素。（不同的模糊度是为了得到景深远近的效果）





,                                           Step 9

Createanother layer and repeat the previous step, this time however use amuch smaller brush. Apply the Gaussian Blur to this layer as well, butuse only 1 pixel for the Radius.

第9步

再建个新图层，重复上面的操作，这次笔头设置更小。同样加上高斯模糊，半径1像素（可以适当调整画笔间距和散布的数量）





Conclusion

Nowjust add your logo and that's it. We have a nice wallpaper. The idea ofthis tutorial was once again to show the power of the Brush Engine. Youcan try different shapes for this same effect, like hexagons forexample. Also you can play a bit with the blurs to add more depth tothe final design. Now it's up to you.

最后

再加上我们自己的logo，便完成了这个漂亮的壁纸啦。这个教程再次展示了画笔引擎功能的强大。我们还可以使用其它笔头形状来实现这种效果，比如六边形，当然我们还可以做出更多的模糊图层以表现更多的景深效果。那么接下来就看你的了。~！

全教程完,学完记得交作业。如果本教程对您有所帮助，请推荐给你的朋友。