1. Replacement for defects, worn out, or lost viewfinder shell – replacement eyecup compatible with Sony Alpha 7R (ILCE7R) / Alpha 77, A77 II, A68 camera viewfinder and other models with identical viewfinder. 2. Better view of the viewfinder display – antiglare / lens hood for the viewfinder: View Finder Eyepiece for glare protection or sun visor/parasol against annoying backlight, side light, or sunlight. 3. Protection for viewfinder display/viewfinder monitor – protector eyecup / electronic viewfinder attachment serves as a bumper around the viewfinder monitor/eyepiece and protects the glass of the viewfinder screen from damage. 4. Comfortable when putting on and using the viewfinder – quality plastic shell material for usual comfort when using the viewfinder / camera viewfinder or applying to eyepiece shell / viewfinder attachment.