In order to get the maximum quality of night picture through the daytime riflescope, we recommend using riflescope magnifications from 3 to 12.
6.Aim the rifle to an object and focus the objective of device with the knob (7) (Fig.1) on its top until you get maximum sharpness of the observed picture.
Observation and identification range provided by the night vision riflescope attachment NVS-33 depends on the ambient illumination, atmospheric transparency and contrast between the target and background. Identification range increases in conditions of higher illumination, in moony night with external light sources of illumination, or if the target is located in front of light background (sand, snow). The identification range decreases in conditions of low illumination, low atmospheric transparency, or if the target is located in front of dark background (plough-land, trees, etc.).
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