Flash CS4 Tutorial
How to Blur Movie Symbol, Text or Button using the Flash Blur Filter
You can use a blurred object to simulate motion or depth of field in your scene. Filter effects can be keyframed and faded over time using either a Classic Tween or Motion Tween.
Add a rectangular object to the workspace with the Rectangle tool (r key).
Select the rectangle and convert it to a Movie Symbol (Modify > Convert to Symbol (F8)).
With the rectangle Movie Symbol still selected, open the Filters panel by clicking the Filters tab (Window > Properties + Filters).
Add a filter to the Filter panel by clicking the Add Filter icon and selecting Blur from the pull-down menu.
In the dialog box you can set the Blur. By clicking the Lock icon next to Blur, you can adjust the x an y values independently.
Quality choices include Low, Medium, and High.
Edit Filter Effects
Once you add a filter effect, you can access and edit the values by selecting the object and clicking the Filter tab.
Filters and Flash Player Versions
Filters work with Flash Player 8 and greater.
Working Smart with Presets
If you have a filter setting that you wish to use several times, click the Presets icon at the bottom of the Filters panel to Save, Rename, Delete or Apply your preset.