Leica 10-15x50 Brochure

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New ideas for even better visibility 
 
Leica represents 
innovation. Our own outstanding achievements in terms of lenses 
and mechanics are being continuously monitored and the standards 
set even higher. Which is why Leica binoculars and spotting scopes 
Fluoride lenses 
 With the help of new 
fluoride (FL) glass, in Leica HD and APO 
models the color fidelity and contrast 
of images is further improved. Optical 
FL lenses are to a large part made up 
of calcium fluoride, a mineral with a 
crystalline structure. Unlike convention-
al optical lenses, this creates a very 
low level of dispersion (light scattering) 
and corrects aberration (imaging errors) 
significantly better. So as a result, the 
viewing experience is more natural and 
impressive than it has ever been before. 
Without fluoride lenses, troublesome color 
fringing can occur, and so contrast and 
sharpness appear weakened. 
Image caption of bird on the right : The new 
optical Leica FL lenses reduce color effects 
to a minimum – and so nature is rendered 
clearly and without distortion. 
Consistently smooth focusing – whatever the temperature 
 The mechanics 
for the Ultravid HD focusing have been further refined. As a result, focusing is even 
smoother and remains free of play across the entire range. Optimized material pair-
ings 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 mechan-
isms can feel “sticky”, and at higher temperatures there 
is even the danger that grease can escape and run on 
the lens. With the optimized Leica focus, these risks 
have been eliminated. In the new Ultravid-HD 
models, it works practically without any 
lubricants. So even in extreme 
temperatures, it is always fully 
functional – with a 
constantly optimum 
degree of smooth-
ness. 
Excellent image quality – even in 
awkward light conditions  
Stray or 
false light can significantly reduce the 
viewing experience. To eliminate this 
effectively, Leica is taking a great num-
ber of steps which, in awkward side-
lighting and backlighting situations in 
particular, ensure a high-resolution, 
clear image without any reduction in 
contrast or constraints due to milky 
fogging. Specially developed software 
simulation allows stray light to be seen 
during development stage. Consequent-
ly, thanks to an optimized housing 
shape, improved light-absorbing paint, 
apertures and stray light traps, the 
construction of the new HD and APO 
models have been optimized to such 
a degree that stray light is (almost) no 
longer of any significance. Because 
after all, you cannot select the position 
of the sun when you are observing 
nature. 
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06.08.2007   13:48:02 Uhr
06.08.2007   13:48:02 Uhr