THE EXPERIENCE OF MACROn- New fully multi-coated opticsn- Close focus to 50cm for macro observation, unique in the marketn- Aspherical lens elements providing edge-to-edge sharpnessn- High Quality BaK4 prism to enhance transmission and resolutionn- Dual-axis, single body housing with synchronized eye-piece IPD adjustmentn- Rubber covered body provides protection and gripn- Twist-up eyecupsn- Fine diopter adjustment and fast and easy central fine-focusingnnU-SeriesnThese compact, inverted porro-prism models feature a durable dual-axis, single body design with synchronized IPD adjustment and full multi-coating for better light transmission. Aspherical lens elements give you edge-to-edge sharpness. They are a perfect “utility” companion for a multitude of applications.nnThe Papilio is a unique binocular. Of course it’s a fine and compact companion on nature trails and holidays, but when your interests are flowers, insects, bugs or butterflies the Papilio turns out to be an indispensable instrument. No other binocular combines fine handling and easy viewing with an unsurpassed close focus of only 50cm! You can observe nature in its natural habitat without disturbing or missing the finest detail.nnNew Fully-multi-coated opticsnFully multi-coated lenses serve the essential purpose of maximizing the amount of light passing through a lens, thereby prevent flare and ghosting from interfering with your view. PENTAX applies multiple layers of coatings to every surface of every element and prism in the full Sport Optics line-up. These fully-multi-coated optics assure the maximum light transmission resulting in a clear, crisp view of the world.nnBaK4 prismsnDue to its outstanding refractive index, the BaK4 glass prism found in all PENTAX sport Optics is highly acclaimed for its perfectly round exit pupil and clear, unvignetted image.nnAspherical lens elementsnEdge-to-edge sharpness is a vital element to comfortable viewing. To achieve this, we utilise aspherical lens elements in our eyepieces. This is a specially shaped lens design that reduces aberration to a minimum.