I was always under the impression that photographic, aka eidetic memory (from the Greek word for "form"), was a genuine, realistic condition. It's referenced in pop-culture a lot. As a child in grade school, I was always envious of the people somewhere out there that had this condition because I always wanted it for my math, spelling, history, geography, etc. tests.
However, this idealized "photographic" memory has seem more and more of a myth. Sure, some are born with a keen sense of memory than others, but they aren't just born with a photographic memory, but that this is something that they have to train their brains to do (I'm not sure if their memory/brain exercises will ever reach the degree of "photographic" -- does anyone know)? Anyway, is this a correct realization? Or does photographic/eidetic memory actually exist from birth?
Or is photographic memory only achieveable through memory exercises such as the "memory palace"?
I know that there is the condition of hyperthmesia, where individuals are able to recall vivid details from their own personal life, but that's not quite the same as seeing thousands of numbers and memorizing the order. But is hyperthemsia a real condition too?