What is the difference between Adobe Photoshop CS3 and CS3 Extended?

I want to be able to do editing of personal photos and do a lot of effects with them. What is the difference between CS3 and CS3 Extended, and why might I want one over the other (other than price?)


Thanks.What is the difference between Adobe Photoshop CS3 and CS3 Extended?
CS3 Extended contains all features of CS3 plus tools for editing and importing some 3D graphics file formats, enhancing video, and comprehensive image analysis tools, utilizing MATLAB integration and DICOM file support.





Unless you do 3d art (like 3ds Max or Blender), edit video etc, you'll want CS3 Extended. But for the core features of CS3 (and Bridge+ImageReady), standard is the way to go