Entries by Christophe Zumstein

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Swarovski EL SV 8.5×42 (2016 model)

Specifications: Objective diameter:  42 mm Magnification:  8.5 x Exit pupil: 4.9 mm Eye relief (acc. to spec): 20 mm Usable eye relief (measured from rim of eyecup): 17 mm IPD:  56 – 74 mm RFOV:  7.6  degrees = 133 m AFOV (according to spec.):  60  degrees Minimal focus distance (measured): 1.75 m** Focus type: CF […]

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Swift Audubon 820 ED 8.5×44

Specifications: Objective diameter:  44 mm Magnification:  8.5 x Exit pupil: 5.2 mm Eye relief (effective, measured from rim of eyecup): 16.5 mm IPD: 57  – 73 mm RFOV:  8.2  degrees = 143 m AFOV (measured, rounded):  59.5 degrees Minimum focus distance (measured): 5.55 m Focus type: CF (direction of rotation from close to infinity: > […]

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Kowa Genesis XD 8.5×44

Specifications: Objective diameter:  44 mm Magnification:  8.5 x Exit pupil: 5.2 mm Eye relief (acc. to spec): 18 mm Usable eye relief (measured from rim of eyecup): 12.5 mm IPD: 55  –  74mm RFOV:  7.0  degrees = 122 m AFOV (measured, rounded):  57.5 degrees Minimum focus distance (measured): 1.7 m Focus type: CF (direction of […]

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Leica “Leitz” Trinovid 10×25 BC

Specifications: Objective diameter:  25 mm Magnification:  10 x Exit pupil: 2.5 mm Eye relief (acc. to spec): 14 mm Usable eye relief (measured from rim of eyecup): 10.5 mm IPD: 30 –  82 mm (!) RFOV:  5.2  degrees = 91 m AFOV (measured, rounded):  53 degrees Minimum focus distance (measured): 4.55 m Focus type: CF […]

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Canon 10×30 IS II

Specifications: Objective diameter:  30 mm Magnification:  10 x Exit pupil: 3.0 mm Eye relief (acc. to spec): 14 mm Usable eye relief (measured from rim of eyecup): 15.5 mm (!) IPD: 55  – 75 mm RFOV:  6.0  degrees = 105 m AFOV (according to spec.):  60 degrees Minimum focus distance (measured): 4.35 m Focus type: […]

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Canon 10×32 IS

Specifications: Objective diameter:  32 mm Magnification:  10 x Exit pupil: 3.2 mm Eye relief (acc. to spec): 14.5 mm Usable eye relief (measured from rim of eyecup): 13.5 mm IPD: 56 – 76 mm RFOV:  6.0  degrees = 105 m AFOV (according to spec.):   55.3 degrees Minimal focus distance (measured): 1.85 m Focus type: […]

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Nikon E II 10×35

Specifications: Objective diameter:  35 mm Magnification:  10 x Exit pupil: 3.5 mm Eye relief (acc. to spec): 14 mm Usable eye relief (measured from rim of eyecup): 12.5 mm IPD: 56  – 72 mm RFOV:  7.0  degrees = 122 m AFOV (measured, rounded):  68 degrees Minimum focus distance (measured): 3.3 m Focus type: CF (direction […]

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Swarovski Habicht 10×40 W

Specifications: Objective diameter:  40 mm Magnification:  10 x Exit pupil: 4.0 mm Eye relief (acc. to spec): 13 mm Usable eye relief (measured from rim of eyecup): 11 mm IPD:  56 – 72 mm RFOV:  6.2  degrees = 108 m AFOV (according to spec.):   60 degrees Minimal focus distance (measured): 4.2 m Focus type: […]

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Optolyth Alpin Classic 10×40

Specifications: Objective diameter:  40 mm Magnification:  10 x Exit pupil: 4.0 mm IPD: 52  –  71 mm Usable eye relief (measured from rim of folded eyecup): 10.5 mm RFOV:  5.8  degrees = 102 m AFOV (measured, rounded):  59 degrees Minimum focus distance (measured): 3.85 m Focus type: CF (direction of rotation from close to infinity: […]

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Leica “Leitz” Trinovid 10x40B

Specifications: Objective diameter:  40 mm Magnification:  10 x Exit pupil: 4.0 mm Useable eye relief (measured from rim of folded eyecup):  10.5 mm IPD: 57  –  74 mm RFOV:  6.3  degrees = 110 m AFOV (measured, rounded): 60 degrees Minimum focus distance (measured): 10.15 m Focus type: CF (direction of rotation from close to infinity: […]