Very often, when buying expensive binoculars production in China raises the question of their actual multiplicity, or the ability to zoom in on distant objects. In order not to make the wrong choice et
2016-08-30 06:19:53 67
How to determine the magnification of the binoculars a video on How to determine the real magnification of the binoculars
Very often, when buying expensive binoculars production in China raises the question of their actual multiplicity, or the ability to zoom in on distant objects. In order not to make the wrong choice of this parameter exists is not a tricky method.
1. Direct the binoculars any more or less bright surface.
2. From a distance (30-40 cm) to look at eyepieces. Be seen 2 bright spots rounded shape. This weekend the pupils.
3. Measure the diameter (d) of the exit pupil by any method (in this case it is done with the help of graph paper).
4. Measure the diameter (D) front of the lens. .
5. To perform simple calculations:
D/D=ratio.
In this case, the real magnification of the binoculars is equal to 25/2,7=9,25.
based On the binocular 10X25 has a designation. This means, that the magnification of the binoculars is equal to 10 and 25 is the diameter of the front objective lens in millimeters)
If you're on the graph paper, you can print using the photos below.
Author: Evgeny Vostrikov
