Kirk,
If you go to a Zenfolio gallery where you are the user, select an image, and look at the photo info tab, there are items for category, sub-category and category detail. (This is the same tab that has the title, caption, copyright and keyword info that Zenfolio takes from the images IPTC info when it is uploaded. ) It looks to me like they have their own preset set of values for these fields, sort of like structured keywords. These are used for searching and SEO.
If a visitor is looking at an image, and the fields have been field in, the information will show up under Categories and Keywords in teh Photo INfo tab of an image. Here's an example:http://mickklass.zenfolio.com/p14469086/h31638d2f?customize=2#h31638d2f
Zenfolio isn't picking up the category IPTC info when I upload an image. This info needs to be entered for each individual image. It would be great if it did get it from the IPTC info, instead of having to enter it one-by- one in Zenfolio.
Mick