art historian
A scholar who studies the history of art. Neutral, formal term used in academic and professional contexts.
She is a famous art historian.
As an art historian, I research Renaissance painting.
美術評論家 is an art critic who evaluates contemporary art, while 美術史家 is an art historian who studies art history.
Compound of 美術 (art) + 史 (history) + 家 (specialist).