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FEATURES OF THE ULTRAVIDEasier to Use: Better, Faster and Lighter: Logically tailored to the intended use, every technical and ergonomic detail that went into the development of the ULTRAVID has been painstakingly examined, perfected or completely reinvented. The ULTRAVID simply put "feels good in the hands". Its ergonomics provide an instrument that is an extension of the observer - it "gets out of the observer's way" with a very comfortable, natural and well balanced feel. It places its controls and hardware at a convenient and comfortable position - and it's obstructions (strap hinges, etc.) remain out of the way. It features a comfortable and unobtrusive thumb rest groove on the underside of each barrel.
Twist up rubber covered eye cups design allows the user to quickly and conveniently snap the eye cup in our out, with two click stop settings along the way. Unlike some other twist up designs, there is no peaked contour of the rubber cup so that the ULTRAVID eye cup can be used while in or out, or in between their extension range without the observing bumping into the peak of the contour of other binoculars.
Left: eyecups provided with Leica ULTRAVID binoculars with one at left in extended position (leather covered And these rubber covered eyecups can be removed by the user to facilitate cleaning the eye lens of the binocular, or replacement. The HD models are covered with a new "soft touch" rugged cladding. This material is more comfortable to grip in all kinds of weather conditions. And the material is notably lighter in weight than the PVC covering used in the previous 42mm Trinovid BN models. The BL versions are covered in even an lighter weight Leather.
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Left: Ultravid HD internal focusing mechanism. Rotating the focus collar drives a focusing lens element in each optical barrel (34,591 bytes). And focusing the Ultravid HD is even smoother than ever before. The mechanism remains free of play across the entire range. Optimized material pairings and gliding discs made from extremely tough, high-performance plastic are used. In cold conditions, the conventional greased focusing mechanisms sometimes only work with difficulty, and at higher temperatures they move too freely. Furthermore, these focusing mechanisms can feel "sticky", and at higher temperatures there is even the danger that grease can off gas or escape and run on the lens. With the optimized Leica focus, these risks have been eliminated. The new mechanics of the Ultravid HD models work practically without any lubricants. So even in extreme temperatures it is always fully functional and with a constantly optimal degree of smoothness. Being mechanical systems, they may require only minor cleaning and/or lubrication service after years or decades of service - depending on the amount of use and the operating environment! Background: How The Eye Works a binocular can be thought of as a light funnel gathering light through its objective (front) lens, with prisms to erect the image, and with an eyepiece funneling light into the eye.
The entrance pupil is the black spot in the center of the iris, this is the opening in the iris through which light passes. Between the cornea and the iris is the anterior chamber filled with vitreous fluid, a clear jelly-like solution. Light passes through the vitreous on it's way to the retina. The retina is lined with light-sensitive sensors (cones and rods) that accumulate the visual signal and then transmit the information through the optic nerve to the brain where the signals are processed. And so by dilating and exposing more sensors to the stimulis, then the Iris causes the eye to compensate with increased area what is lacked in intensity can provide reasonably good views of fainter areas at night.
Diopter Adjustment As people age it is likely their vision will change in focus near or distant or both for example, and one may develop astigmatism too. Changes of the eye tend to result in various degrees of myopia (nearsightedness) or hyperopia (farsightedness). In a single tube such as a telescope we simply focus to accommodate differences between observers. But with binoculars it is necessary not only to focus to accommodate differences between people, but to also have some mechanism to compensate for differences between the left and right eyes.
2. gently pull the focus knob up (away from the binocular bridge)
3. now turn the protruding dial clockwise or counterclockwise to achieve best focus for the right eye
4. without turning the extended dial, turn the inner dial (adjacent the binocular bridge) clockwise or counterclockwise to achieve best focus for the right eye
5. without turning either dial, gently push the extended knob back into place to reseal the focus mechanism.
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Note however, binoculars or telescopes cannot correct astigmatism. This is a vision problem that occurs when the cornea does is not formed in a symmetrical spherical shape. Astigmatism may develop as the eye forms in the womb due to factors including inherited genetics and environment. Most people have a slight astigmatism since it is uncommon for the cornea to have developed in a perfectly symmetrical way. People with astigmatism see stars as points of light with a streak of light across it; as the observer rotates their eye about the eyepiece then the streak will rotate with the observer. Mild astigmatism may be imperceptible in routine observations, particularly during bright daylight. But those who have noteworthy astigmatism will see things blurred regardless of focus changes and these people need to wear corrective spectacles or contact lenses to correct it.
It is also possible that over time, some of the detrimental aspects may change in a way that improves vision too. As well as the high grade lightweight structural materials including a housing made of magnesium, a central hinge shaft of extremely sturdy titanium - which materials could possibly be more robust and lighter at the same time?
Left: Black nylon pouch provided with Leica ULTRAVID 42mm BR Binocular.
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Brighter: This development is achieved by Leica's continued application of state of the art computer aided optical design, and by the use of special high grade optical raw glass materials. With the help of recently developed fluoride (FL) glass the Leica HD and APO-TELEVID spotting telescope models offer supreme color fidelity and contrast. Optical FL lenses are to a large part made up of calcium fluoride, a mineral with a crystalline structure. Unlike conventional optical lenses, this creates a very low level of dispersion (light scattering) and corrects aberration (imaging errors) significantly better than previous glasses. So as a result the viewing experience is more natural and three-dimensional, more impressive than it has ever been before.
The optics incorporate the new HighLux System (HLS), this is an optical coating that is unequalled in its quantity and uniformity of transmission of light in the visible spectrum. The HLS coatings consist of a precisely applied forty three (43) layer coating, with each layer applied as thin as only 40 nanometers. By means of a special mirror layer on the prism system the process yields a level reflection of 99.5 %; it was possible to raise the image brightness to this level over the prior generation models. This among those attributes that makes the impressively high resolution imaging performance, and striking enhanced contrast possible. Leica AquaDuraTM ensures greater visibility in wind and rain
Right: Microscopic image of water droplet demonstrating the operating principle of AquaDura (32,870 bytes).
Left: Leica AquaDura applied on the right objective lens of a Leica binocular. Compare this with previous generation high transmission coatings applied on the left objective (82,183 bytes).
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PERFORMANCE OVERVIEW
Right: Leica ULTRAVID 50 binocular shown in Green that has since been discontinued, but is nice to see (166,468 bytes). The remarkably slim and compact housings assure these binoculars can easily be put into a brief case or travel bag, making these a very handy binocular to travel with - having a binocular available is just as important as its optical properties.
ULTRAVID 50mm HD BINOCULAR SPECIFICATIONS
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