Yeah it's weird; I have a fairly vivid recollection of a picture of page 606 of "Harry Potter and the Deathly Hallows", in a blurry photograph taken against a carpet (this is where Snape kills Dumbledore); I can generally remember where on a page I read a passage in a book; but there's no way I "see" the page.

Ditto for other "visualized" things; I just have no idea whether the qualitative experience I have of "visualizing" things is anything like what other people do.

Whenever I read about this phenomenon, there doesn't seem to be a good quasi-objective metric of this subjective capability to visualize -- there's no test or questionnaire I can use to see how my abilities rate against others'.

I think there's room for some experimentation / science here and probably a viral online quiz that would get some lucky content creator a solid stream of interest for years.