Presidential photographs

Factual Questions
1

Does anybody know who the first president to be photographed was? First, as in order of holding the presidency, not necessarily the actual first to sit to be photographed.

I’m thinking it may have been Andrew Jackson. If so, is that famous photo on the 20 the only one ever made of him?

Thanks,

Sir

2

I’m not sure who the first to be photographed was, but I’ve heard that Abe Lincoln was the first to be photographed on a regular basis.

3

I’ve heard that J.Q. Adams has the first presidential photo, although it may have been a daguerrotype and it might have been taken after he left office.