Hyperion Universal Zoom Mark IV 68° wide-angle eyepiece with five magnifications in one eyepiece - focal lengths 8, 12, 16, 20 and 24mm with revised Clickstop click stop Phantom Coating Group coating for complete freedom from reflections, maximum brilliance and outstanding contrast performance Includes three different eyecups which fit via the M43 photo/video thread: large, height-adjustable eyecup, a smaller rubber eyecup and a foldable eyecup with side light diaphragm M43 photo/video adapter thread for afocal and classic projection photography, allows optional connection of most cameras 2" and 1.25" receptacle included - suitable for all 1.25"- Binocular attachments, as well as spotting scope connection thread with 1 3/8" 55mm diameter at 290g weight, perfect for binocular viewing "Safety-Kerf" safety grooves instead of disturbing grooves in the receptacles Built-in 2" SC thread for shortest adaptation to telescopes and prisms/mirrors 4mm gain in insertion depth with spotting scope adapter ring A: The Mark IV reaches the focus point on all tested telescopes and spotting scopes (optional adapters available for most brands) Sufficient distance to clamping screws with telescope adapter ring B Eyepiece holster with belt loop - also holds on tripod legs