Portraiture is a good example of what I mentioned. I am a painter, but I would say that a camera is far more capable of capturing the subtleties of the human face your than a painter. Don't believe me? Search for paintings made before 1800 that feature a smiling face. They exist, but even the lamest insta does a better job of showing us those fleeting facial moments.

Landscapes are another matter. Try finding any photo of a landscape that is half as sublime as the landscape paintings made by the Hudson river school. An effective painter can improve upon optical reality in a way that beggers belief. They do this with a clever mix of increasing contrast and affinity in a way that would be almost impossible for a photographer.