The Sunwayfoto PNL-D810R L-Bracket for Nikon D810 enables fast changes between portrait and landscape orientation with your Nikon D810 without the need to readjust your head and completely recompose the shot. You can simply release the bracket from your Arca-style quick-release clamp, tilt it 90°, and lock the bracket back in place. Using an L-bracket also facilitates a sturdier base of support than tilting an entire head to a 90° position.