The OM SYSTEM EE-1 Dot Sight is a shoe-mount dot sight ideal for super-telephoto photography of wild birds. The sight offers a center aiming dot with adjustable brightness and position to enable fast subject acquisition and tracking. You'll be able to tell whether your aim is right on target or slightly off without looking through the camera's viewfinder or using the monitor. The EE-1 Dot Sight fits right into the camera's hot shoe and has a slide lever opening mechanism. Built for durability, it is both dust and splashproof.