Hi, I wanted to add a text indicating who uploaded the photo?
Can anyone help me what to do?

Also, is there a plugin for this? and it would be great if the link will go the users profile for viewing purposes like his real name, email and contacts.

Thanks.

There is no plugin for this: http://www.zenphoto.org/2008/06/zenphoto-plugins/

Also we actually don't store which user uploads an image. You have to use the custom field on the edit page for example or use albums for each user.

Would be pretty easy to put that into description of the file before it is uploaded and make ZenPhoto read that as usual.

Right! EXIF is of course a way (I always forget that a little since I don't take photos..)