From Manufacturer
Hoodman's HoodEYE Eyecup for Canon 5D, 5D Mark II, 6D, Rebel T3/1100D Models will help block out light when looking through your camera's viewfinder. From its oversized design, which seals out ambient light, to its rotating nature that accommodates right- or left-eyed shooters, this eyecup ensures that the Canon 5D, 5D Mark II, 6D, and RebelT3/1100D shooter can get their shot with ease. The self-locking mount slides over the eyepiece mounting rails, keeping the cup in place. Additionally, the hypoallergenic silicone keeps irritation at bay for hours of comfortable shooting.
