Entries by Christophe Zumstein

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Kowa BD 10×42 XD

Specifications: Objective diameter:  42 mm Magnification:  10 x Exit pupil: 4.2 mm Eye relief (acc. to spec): 18 mm Usable eye relief (measured from rim of eyecup): 12.5 mm IPD:  57 – 75 mm RFOV:  6.2  degrees = 108 m AFOV (measured, rounded): 59 degrees Minimum focus distance (measured): 1.15 m Focus type: CF (direction […]

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Kite Bonelli 10×42

Specifications: Objective diameter:  42 mm Magnification:  10 x Exit pupil: 4.2 mm Eye relief (acc. to spec): 16 mm Usable eye relief (measured from rim of eyecup): 11.5 mm IPD:  54 – 73 mm RFOV:  6.5  degrees = 114 m AFOV (measured, rounded): 61 degrees Minimum focus distance (measured): 1.45 m Focus type: CF (direction […]

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Canon 10×42 IS WP

Specifications: Objective diameter:  42 mm Magnification:  10 x Exit pupil: 4.2 mm Eye relief (acc. to spec): 16 mm Usable eye relief (measured from rim of eyecup): 12 mm IPD:  58 – 76 mm RFOV:  6.5  degrees = 114 m AFOV (according to spec.):   59.2  degrees Minimum focus distance (measured): 2.5 m Focus type: […]

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Zeiss 10×50 “Jahrhundertglas”

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Usable eye relief (measured from rim of bakelit eyecup): 5 mm IPD: 54  – 76 mm RFOV:  7.4  degrees = 130 m AFOV (measured, rounded): 74 degrees Minimum focus distance (measured): 7.3 m Focus type: CF (direction of rotation from close to infinity: > […]

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William Optics 10×50 ED

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Eye relief (acc. to spec): 16 mm Usable eye relief (measured from rim of eyecup): 12.5 mm IPD:  56 – 73 mm RFOV:  6.5  degrees = 114 m AFOV (measured, rounded): 62 degrees Focus type:  IF Range of diopter adjustment (estimate): +/- 5 dpt* […]

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Swarovski EL SV 10×50

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Eye relief (acc. to spec): 20 mm Usable eye relief (measured from rim of eyecup): 17 mm IPD:  56 – 74 mm RFOV:  6.6  degrees = 115 m AFOV (according to spec.):   62 degrees Minimum focus distance (measured): 2.85 m Focus type: CF […]

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Ross Stepmur 10×50

Specifications: Objective diameter (according to spec):  50 mm Effective objective diameter (measured): 48 mm Magnification:  10x Exit pupil (according to spec): 5 mm Effective exit pupil (measured): 4.8 mm IPD: 55  – 74 mm Usable eye relief (measured from rim of eyecup): 5 mm RFOV:  7  degrees = 123 m AFOV (measured, rounded): 65 degrees […]

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Nikon WX 10×50

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Eye relief (acc. to spec): 15.5 mm Usable eye relief (measured from rim of eyecup): 14 mm IPD:  58 – 78 mm RFOV:  9  degrees = 157 m AFOV (spec. Nikon):   76.4 degrees AFOV (measured, rounded):  85.1 degrees Minimum focus distance (estimate): 8.5 […]

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Nikon Action EX 10×50

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Eye relief (acc. to spec): 17 mm Usable eye relief (measured from rim of eyecup): 13 mm IPD: 56  – 72 mm RFOV:  6.5  degrees = 114 m AVOV (measured, rounded): 59 degrees Minimum focus distance (measured): 6.3 m Focus type: CF (direction of […]

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Meopta MeoStar B1 10×50

Specifications: Objective diameter:  50 mm Magnification:  10x Exit pupil: 5 mm Eye relief (acc. to spec): 17 mm Usable eye relief (measured from rim of eyecup): 14.5 mm IPD:  56 – 73 mm RFOV:  6.3  degrees = 110 m AVOV (measured, rounded): 61 degrees Minimum focus distance (measured): 3.35 m Focus type: CF (direction of […]