Extremely useful ZopeProduct for representing a resizable image in a Plone or CMF-based site. Like Zope's standard Image but smarter. Requires either the ImageMagick? or PIL package on your system, which can be tricky to install. See also CMFPhotoAlbum.
http://zope.org/Members/Tiran/CMFPhoto
How to Convert an Image to a Photo - see also image2photo.py & images2photos