DOCTER DOCTER®8x58 B/CF - Manual (Page 6)

Operation Instructions
The DOCTER     Binoculars acquired by you is a leading product of fine-mechanical
precision. It is a product with highest requirements of the optical performance after
latest development of the optics calculation and optics technology concerns with solid
processing. All binoculars of this series are implemented as spectacle wearer models
and they are waterproof.
Technical data
DOCTER
8x42 10x42
Magnification 8x 10x
Entrance pupil diameter 42mm 42mm
Field of view at 1000 m 131m 114m
Close distance 3m 4m
Exit pupil diameter 5,3mm 4,2mm
Eye relief 16mm 14mm
Dioptre adjustment range +/-3 dpt +/-5 dpt
Range of interpupillary distance 56/72mm 56/72mm
Water tightness 3m 3m
Twilight number 18,3 20,5
Length 139mm 139mm
Width 125mm 125mm
Mass 860g 843g
Eye distance
To reach a great and contrast panorama the binoculars have to be adjusted to the
different eye distance of different users. This adjustment happens by bending the
central hinge (1 fig. 1) until both fields of vision of the right-hand and left-hand
telescope completely coincide during observing any object
.
Focusing and defective sight assistance
Observe any object with the left eye trough the left ocular and turn the mid-wheel (2)
till the object is clear and high contrast.
A possible defect of the eyes of ± 3 dioptres with the 8x42 binoculars and ± 5
dioptres with the 10x42 binoculars can be compensated by turning the dioptre
adjustment (3). Thereby observe the same object with the right eye and turn the
diopter setting wheel till the object impression is clear and high in contrast.