There will always be someone with camera who wanted to take her picture. -> (better) There will always be someone with camera who wants to take her a picture. -> (or) There will always be someone with camera who would like to take her a picture. As answered by the other user, "to take (someone) a picture" or "to take a picture of (someone)" means "to photograph (someone)". === I wish you a good day.／祝　是日安好。

Take a picture simply means to take a photograph.

I think it should read: "There will always be someone with a camera who wants to take her picture." "Take a picture of her" and "take her picture" have exactly the same meaning. :) (More advanced: You can replace "take" with "snap" in this context. "Picture" can also be "photograph" or, more commonly, "photo.")