Eye Relief : Eye relief refers to the ideal distance from your eye to the eyepiece glass. : Eye relief refers to the ideal distance from your eye to the eyepiece glass. I like the Zeiss SFL 8x50s below better, but overall these are great binoculars that live up to the Zeiss name. They're good for general-purpose use—wildlife, sports, travel, or any time you want binoculars but don't want to know you have binoculars. And at night, they’re good for moon-gazing, with crisp detail so steady that it trumps optically superior models.