Provide an image-level sitemap--not just gallery-level
Extend Zenfolio's sitemap to the individual image pages, not just gallery pages as of today. Individually keyworded images are not crawled by search engines, only the gallery pages are crawled. this means that individual images are not easily found by anyone searching for editorial or other stock photography, and also the images that show up in Google/Bing image search are tiny thumbnails. Not the best impression! Note that image-level sitemaps are today provided by PhotoShelter, very attractive to the editorial/stock photographer.
George Wheelhouse Fine Art Photography commented
It's staggering that Zen haven't bothered to do this. It would aid SEO massively for very little work.