Entries by Christophe Zumstein

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Optolyth Royal 8×56

Specifications: Objective diameter:  56 mm Magnification:  8 x Exit pupil: 7.0 mm Usable ye relief (measured from rim of folded eyecup):  14.5 mm IPD: 61 – 76 mm RFOV:  6.3  degrees = 110 m AFOV (measured, rounded):  53 degrees Minimum focus distance (measured): 4.1 m Focus type: CF (direction of rotation from close to infinity: […]

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Hensoldt 8×56 Nacht-Dialyt

Specifications: Objective diameter:  56 mm Magnification:  8 x Exit pupil: 7.0 mm Useful eye relief (measured from rim of unfoldable eyecup): 8mm (!) IPD: 59 – 72 mm RFOV:  6.3  degrees = 110 m AFOV (measured, rounded):  52 degrees Focus type: CF (direction of rotation from close to infinity: < anticlockwise) Range of diopter adjustment […]

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DDoptics Pirschler 8×56 Gen. III Mg

Specifications: Objective diameter:  56 mm Magnification:  8 x Exit pupil: 7.0 mm Eye relief (acc. to spec): 20 mm Usable eye relief (measured from rim of eyecup): 15 mm IPD: 57  – 74 mm RFOV:  7.4  degrees = 129 m AFOV (measured, rounded):  55 degrees Minimum focus distance (measured): 3.0 m Focus type: CF (direction […]

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DDoptics Pirschler 8×56 DIA HDX

Specifications: Objective diameter:  56 mm Magnification:  8 x Exit pupil: 7.0 mm Eye relief (acc. to spec): 20 mm Usable eye relief (measured from rim of eyecup): 17.5 mm IPD:  58 – 74 mm RFOV:  7.2  degrees = 126 m AFOV (measured, rounded):  58.5 degrees Minimum focus distance (measured): 4.8 m Focus type: CF (direction […]

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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 (meassured): 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: […]