"Eidetic" is the technical adjective used to describe what we more commonly call a photographic memory.

Is eidetic memory the same as iconic memory?

Iconic Memory is Not The Same as a Photographic Memory

Photographic memory does not exist. ... However, to clarify – eidetic memory is not photographic memory. It simply means you can remember many things in great detail, but not all the details. More importantly, eidetikers may even invent details that were never there.

What is it called when a person remembers everything?

Hyperthymesia is an ability that allows people to remember nearly every event of their life with great precision. Hyperthymesia is rare, with research identifying only a small number of people with the ability. Studies on hyperthymesia are ongoing, as scientists attempt to understand how the brain processes memories.