se up photography, is the act of photographing objects such as flowers or insects in close range so the subject you are photographing fills the frame. In other words, it’s the act of photographing subjects close up. This is easily achievable with any lens, even a 300mm telephoto lens.
Macro photography is in essence close up photography as well. However, close up photography is not always considered as true macro photography. For example, if you have a lens that is NOT considered a real macro lens, yet offers a macro setting (as many do nowadays), this is usually refered to as being close up photography, and not true macro.