The Hoodman Hoodeye Eyecup for Sony A7 models A7, A7R, A7S, A7II allows you to comfortably capture images by eliminating the surrounding visuals. This eyecup blocks the external lights while viewing in the viewfinder. It is designed with a self-locking mount that slides over the eyepiece mounting rails, thus keeping the cup in place while shooting. This oversized cup can be rotated while viewing from the right or left eye. The eyecup is made from Hypoallergenic silicon rubber, which is soft on the skin and safe to use without causing any allergic reaction.