16/02/2022
Some great reading on the topic of binocular magnification.
Today we would like to introduce you to a new series of posts, designed to provide insights into the most important optical parameters.
Let's start with the magnification factor, the first digit in the type designation:
The distance to the object shrinks by the magnification factor.
Typical binoculars for free-hand observation feature 7x or 8x to 10x magnification. Higher magnifications deliver a larger image and, in theory, better detail recognition, but this benefit quickly becomes the opposite due to the effect of hand tremor increasing significantly.
When in doubt, a lower magnification is more enjoyable and the better choice in the long run. Apart from a steadier image, lower magnifications also offer additional benefits:
➡️ The field of view is larger and you have a better overview of the surroundings.
➡️ The exit pupil is larger, resulting in a brighter image at dawn.
➡️ The depth of field, i.e. the area in the foreground and background that is still perceived as sharply focused, is also larger. You do not have to refocus for minor range changes constantly.
For more information, please visit the ZEISS section in BirdForum: https://zeiss.ly/magnification
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