My site is a photography gallery website built with K2. Each K2 item is a photo. I have attached extra fields to each of the photos, for example, resolution, shot by what camera, style, etc. I'd like to allow users to search and sort the photos by these extra fields. It seems to me that normal search will only search K2 item's introtext and fulltext, is there anyway to search these extra fields?
Furthermore, is there any extension better than K2 to handle these kinds of contents?