The Hoodman HoodLoupe Compact 3.2 collapses to 50% of its original size to save space while you're on the go. The Hoodman HoodLoupe Compact 3.2 is used to closely inspect images on your DSLR's LCD display. The HoodLoupe isolates your display from light and prevents reflections to help you more easily view your photos out in the field. The Hoodman HoodLoupe 3.2 is for LCD display screens up to 3.2" diagonally with a 3:2 aspect ratio. The HoodLoupe 3.2 also has a +/-3 diopter adjustment to help you focus your eyesight and customize your viewing experience.