Changing backgrounds in Photoshop?

[dennykyser]

Is there a type of background that works best to change the backgrounds in photoshop. I have hear that "Chroma Key" works best. Also what feather amount do you use?

[chris.bailey]

Chroma Key backgrounds do work well but any plain colour that does not exist on the model will work as well, I tend to use white and then use the background eraser in CS. Chroma backgrounds come into their own in video work where you want to automate the removal of a background in a lot of frames.

Feather depends on the resultion, lighting and a lot of other factors. Start with a couple of pixels and increase it if you find you are in trouble.