Resurrect the Extract Command
The Extract command is no longer offered in Photoshop CS4, but you can still access its functionality in the new version of Photoshop by transferring a file called "Extract-Plus.plugin" from the Plug-Ins>Filters folder of Photoshop CS3 to the same folder in Photoshop CS4. It works and hopefully, there'll be something even better in CS5.
You can also download the file of goodies that were remove from CS3
directly from the adobe site.
The file includes a lot more than just the ‘Extract’ filter.
http://www.adobe.com/support/downloads/detail.jsp?ftpID=4048
This file also includes info on how to use them in English, French and Spanish.
Excellent, thank you! I just installed it and it works. You just need to restart PS if it’s open.
That’s great, but what if you don’t have CS3?