Can MoreGallery use IPTC image data?
Yes! When you upload an image with IPTC data embedded, it will read that to prefill the image information. In v1.3 this only happens for the name, as of v1.4 this has been extended to also automatically fill tags.
For the name, MoreGallery will look at the Caption, Headline and DocumentTitle IPTC data where the latter takes priority. For tags, it will combine all values from the Category, Subcategories and Keywords IPTC values.
IPTC data is also available in the image templates for front-end rendering.