Leica Trinovid 8×20 BCA

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Objective diameter:  20 mm
Magnification:  8 x
Exit pupil: 2.5 mm
Eye relief (acc. to spec): 14 mm
Usable eye relief (measured from rim of eyecup): 13 mm
IPD: 32  – 74 mm
RFOV:  6.5  degrees = 113 m
AFOV (measured, rounded): 51.5 degrees
Minimum focus distance (measured): 2.65 m
Focus type: CF (direction of rotation from close to infinity: > clockwise)
Degrees of rotation of focus wheel from 3m to infinity (measured): 490 degrees
Range of diopter adjustment (acc. to spec.): +/- 3.5 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 5 dpt*
Prism system:  Schmidt-Pechan
Waterproof: splashproof
Weight (measured, with eyepiece cover and strap): 235 g
Made in: Portugal
*range of diopter adjustment not affected by position of focus wheel



With its dual hinge, foldable to a very compact size, this was for years the pocket binocular par excellence. Nice optics for this small size instrument. It was later complemented by the even more compact and better performing Ultravid 8×20; see remarks under separate post “Leica Ultravid 8×20 BR”, https://binocular.ch/leica-ultravid-8×20-br/.



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