Well, something has changed, maybe in Spotlight!
Even if different data is stored in similar/equivalent fields, the index should be built on all fields.
By the way I tried my old Nikon 990 which produced in the past images that were indexed, took a picture, add a caption but no luck... still not indexed. (I also updated the IPTC to force a reindex to no luck) AND again, saving the image (see settings) makes it searchable, and it is found by spotlight!
Any word of advice?
Cheers,
Giorgio
[attachment deleted by admin]