This Macro Lens for the GoPro Hero4 Session is an excellent tool for capturing detailed close up shots. This macro lens reduces the cameras focal length allowing the Hero4 Session to focus on close up subjects. Without a macro lens the GoPro will not focus on anything closer than approx 12 inches away. Perfect for adding into Gopro edits as creative transitions. The Macro Lens features a snap-on design for quick installation/removal. The macro is a great lens to have in your bag as it expands the capabilities of the GoPro Hero4 Session focal range dramatically.