Adobe Flash is a graphics application used to create animation for the Internet, television and video games. Flash does not have the rich image editing tool sets that its companion applications Photoshop and Fireworks have. For this reason, it is often necessary when working with Flash to send graphics and textures to these other program for further editing, including when you want to create a depth-of-field 3D effect.
1. Start the Adobe Flash application. Select “File” from the menu and choose “Open.” Browse to and open a Flash file containing a scene you have created using imported images such as JPEG or BMP files.
2. Select the object farthest to the back in the composition. Right-click on the object and choose “Edit With.” In the dialog box, choose the graphics editor you want to use, such as Photoshop or Fireworks.
3. Select “Filter” from the menu and choose “Blur.” From the options, choose “Gaussian Blur.” In the dialog box, adjust the “Blur Amount” slider until you like the preview, keeping in mind that since it is furthest in the back, it needs the most blur.
4. Select “File” from the menu and click “Save.” When you go back to the Flash application, you will see that the updated image reflects your changes.
5. Repeat Steps 2 to 4 for all the images in your Flash scene. As you move forward in the scene, apply less and less Gaussian Blur. Save your work.