Close up photography is also known as macro photography. This type of photography aims to have the object in the image to be life size, which means a 1:1 magnification ratio. To achieve this effect small objects are usually used, such as insects. In this type of photography you try to get as close to the image as you can or use close up or macro or micro lenses. You can also use a teleconverter, extension tube, bellows attachment, smaller film or reverse lens to get the type of photos you need in this style of photography. You can also take the photo farther away and then enlarge the image. It is sometimes tricky to focus in macro photography, as the closer you get the less depth of field you usually have. Lighting can also be tricky and handheld flash units often help. It may take you a while to get used to using apertures and lenses in macro photography, so it's a good idea to research the topic beforehand. Most digital cameras have a macro or close-up mode on them.