ED Objective Lens: Minimizes chromatic aberration, ensures accurate color reproduction with increased resolution and contrast. ,- XLT Coatings (Fully Multi-Coated Optics): Proprietary XLT lens coatings maximize light transmission through the optical path for brighter images and increased resolution and contrast. ,- Magnesium Alloy Body: Strong and durable, but lighter weight than traditional aluminum alloy housings. ,- Dual focus: Coarse focus for rough adjustment and fine focus for detailed adjustment. New quicker focusing mechanism. ,- Rotating tripod mount with detents: Allows orientation of the eyepiece in the best viewing position for application. ,- 16-48x Zoom Eyepiece: Adjustable magnification, giving you a wide field of view for general viewing and detailed up close viewing when needed. ,- Twist-up eyecup for correct positioning of the user's eyes for comfortable viewing with or without eyeglasses. ,- Standard 1.25” eyepiece mount allows a variety of astronomical eyepieces to be used with the spotting scope. ,- T-adapter ring included for easy 35mm/digital SLR photography. ,- Sliding sunshade with sighting line keeps out stray light and keeps moisture off of the objective lens. Sighting line aids in finding the subject you want to bring into view