Maet och Skymningsegenskaper hos Leica Vector 4 Med Tillsatslptik (Measurement and Low Light Performance with Leica Vector 4 Together with an Optical Enhancer).

摘要

The Vector binoculars as well as the optical enhancer are characterized by a high optical quality. This is especially noticed when observing against the light and low light situations. However classical optics, including the optical enhancer, have distinct limitations in darkness. The enhancer is advantageous when observing medium to high contrast targets, but not against low contrast targets in darkness. The Vector 4 laser lobe is well defined and corresponds to the square aiming reticle. The optical enhancer does not change that fact. Measurement through vegetation as well as in the vicinity of power lines and the horizon might demand a window of three aiming symbols, both with and without the enhancer. In good visibility it has been possible to measure distances between 4.5 kilometers and 5.5 kilometers with the enhancer and a kilometer less without it. The enhancer does reduce the divergence, but it also facilitates observation. The drawback is its weight. Vector 4 has a cool image color tone compared to Vector 1500 but the difference is of no major practical importance. The optical enhancer is color neutral and it maintains the binocular contrast characteristics.