Entries by Christophe Zumstein

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Leica Ultravid 12×50 HD Plus

Specifications: Objective diameter:  50 mm Magnification:  12 x Exit pupil: 4.2 mm Eye relief (acc. to spec): 13 mm Usable eye relief (measured from rim of eyecup): 11 mm RFOV:  5.7  degrees = 100 m AFOV (messured, rounded): 68.5 degrees Minimum focus distance (measured): 3.15 m Focus type: CF (direction of rotation from close to […]

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Canon 8×20 IS

Specifications: Objective diameter:  20 mm Magnification:  8 x Exit pupil: 2.5 mm Eye relief (acc. to spec): 13.5 mm Usable eye relief (measured from rim of eyecup): 13 mm IPD:  56 – 72 mm RFOV:  6.6  degrees = 115 m AFOV:  49.5 degrees Minimal focus distance (measured): 1.9 m Focus type: CF (direction of rotation […]

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Steiner BluHorizons 8×22

Specifications: Objective diameter:  22 mm Magnification:  8 x Exit pupil: 2.75 mm Useful eye relief (measured from rim of eyecup): 12 mm IPD: 42 – 72 mm RFOV:  7.1  degrees = 125 m Minimum focus distance (measured): 3.1 m Focus type: CF (direction of rotation from close to infinity: > clockwise) Degrees of rotation of […]

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Nikon EDG 8×32

Specifications: Objective diameter:  32 mm Magnification:  8 x Exit pupil: 4 mm Eye relief (acc. to spec): 18.5 mm Usable eye relief (measured from rim of eyecup): 14 mm IPD: 54  –  76 mm RFOV:  7.8  degrees = 136 m AFOV: 57.2 degrees Minimum focus distance (measured): 2.05 m Focus type: CF (direction of rotation […]

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Kowa BD II 8×42 XD

Specifications: Objective diameter:  42 mm Magnification:  8 x Exit pupil: 5.25 mm Eye relief (acc. to spec): 17 mm Useful eye relief (measured from rim  of eyecup): 15mm IPD:  57 – 76 mm RFOV:  8.2  degrees = 143 m AFOV (measured, rounded): 60 degrees Minimum focus distance (measured): 1.6 m Focus type: CF (direction of […]

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Kowa BDII 6.5×32 XD

Specifications: Objective diameter:  32 mm Magnification:  6.5 x Exit pupil: 4.9 mm Eye relief (acc. to spec): 17 mm Useful eye relief (measured from rim of eyecup): 14.5mm IPD:  58 – 77 mm RFOV (acc. to spec.):  10.0  degrees = 175 m RFOV (meassured): 9.8 degrees = 171 m AFOV (measured, rounded): 60 degrees Minimum […]

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Meopta Optika 10×42 HD

Specifications: Objective diameter: 42 mm True aperture (measured): 41mm Magnification: 10 x Exit pupil: 4.2 mm Eye relief (acc. to spec): 15 mm Useful eye relief (measured from rim of eyecup): 11 mm IPD (measured): 56 – 75 mm RFOV: 6.0 degrees = 105 m AFOV (measured, rounded): 57.5 degrees Minimum focus distance (measured): 2.9 […]

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Docter Aspectem 80/500 Vario 20-50×80

Specifications: Objective diameter:  80 mm Magnification:  20x – 50x Exit pupil: var. Eye relief (acc. to spec): 11 mm Usable eye relief (measured from rim of eyecup): 7.5 mm IPD:  56 – 74 mm RFOV:  var AFOV:  var Focus type:  IF Minimum focus distance (acc. to spec.): 32 m Excess focus travel beyond infinity position […]

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Omegon 2.1×42

Specifications: Objective diameter:  42 mm Magnification:  2.1 x Exit pupil: N.A. Eye relief (acc. to spec): N.A. IPD:  56 – 73 mm RFOV:  “26 degrees” Focus type:  IF (direction of rotation from close to infinity: > clockwise) Excess travel beyond infinity position (estimate): 4 dpt Prism system:  none (Galilean) Waterproof: no Weight (measured, with eyepiece […]

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Astro Hutech Hinode 1.8×40

Specifications: Objective diameter:  40 mm Magnification:  1.8 x Exit pupil: N.A. Eye relief: N.A. IPD:  50 – 71 mm RFOV:  > 24 degrees Focus type:  IF (direction of rotation from close to infinity: > clockwise) Excess travel beyond infinity position (estimate): 3.5 dpt Prism system:  none (Galilean) Waterproof: no Weight (measured, with eyepiece cover and […]