Telescopes and monoculars Fokussierbare Kepler-Systeme 2,8 x 9 Art. Nr. 16731 Product BenefitsIdeal for use when you’re on the move (with finger ring).Can also be used in a system carrier frame.Product [...] brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system [...] the lenses.Temples 150 mm, can be shortened.Technical data Optical Properties Magnification distance2.8 xVisual field distance /1000 m220 mViewing angle distance/far12.5 °Magnification Near3.4 xVisual field
Properties Magnification distance4.2 xVisual field distance /1000 m175 mViewing angle distance/far10 °Magnification Near5.5 xVisual field near25 mmViewing angle near7.2 °Lens diameter10 mmMaterialsmanua [...] brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
Properties Magnification distance4.2 xVisual field distance /1000 m220 mViewing angle distance/far12.5 °Magnification Near5 xVisual field near32 mmViewing angle near9.2 °Lens diameter12 mmMaterialsmanua [...] brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
x 220 m26 mm12.5 °10 °Focusable Keplerian Systems167324.2 x5.5 x 175 m25 mm10 °7.2 °Focusable Keplerian Systems167334.2 x5 x 220 m32 mm12.5 °9.2 °Focusable Keplerian Systems167346 x7.6 x 175 m26 mm10 °6 [...] brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system
brightness.Small, lightweight and inconspicuous.High quality, dust-proof metal housing.Very short near point.With an intermediate adapter can be used with reading caps Item No. 16210-162116.Roof prism system [...] the lenses.Temples 150 mm, can be shortened.Technical data Optical Properties Magnification distance2.8 xVisual field distance /1000 m220 mViewing angle distance/far12.5 °Magnification Near3.4 xVisual field
order to be able to read we require a functioning retinal surface of around 2.5 degrees to the left and right of the fixation point, i.e. a visual angle of around 5 degrees in total. A reading angle is necessary [...] . What is long-sightedness? In the case of long-sightedness, the eyeball is too short. The focal point of the eye is behind the retina. Your near vision is then blurred, e.g. when reading. When the eye [...] What is short-sightedness? In the case of short-sightedness, the eyeball is too long. The focal point of the eye is in front of the retina and your distance vision will be blurred. The eye is not able
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