Wallpaper Animal. Flash card memory and battery replacement for example most of the camera light enough and must be very necessary. A flash card will enable us to preserve more than just one moment. Days and days of photos to load compact flash cards us, allowing us to dial into exactly where we are on the say day as long as we live. When our Nikon camera battery dies you will need a backup or three, depending on the type of photographer. I myself like to keep the camera running.