Description of Steiner Merlin 10 X 50 Binoculars Perfect balance and comfort with exceptional brightness. The Merlin 10x50’s feature phase corrected roof prisms and fully multi-coated optics for clarity and highest resolution. The image brightness due to the large 50 mm lenses is perfect for deeper, older growth forests and for viewing during early morning and evening hours. Features: Close focus distance: 8.0 feet Exit pupil: 5 mm Eye relief: 18 mm Field of view: 264 feet at 1,000 yards Weight: 26 ozs. Length: 7.25 inches Height: 2.50 inches Width: 5.15 inches