Swarovski Optik Swarovski Optik Btx Eyepiece Module

Swarovski Optik BTX eyepiece moduleOBJECTIVE LENS DIAMETERThe objective lens diameter specifies how much light can enter the optics. This makes it a key factor in an instrument's performance, for example, in twilight. The bigger the objective lens diameter, the more light the objective lens can capture. The darker the surroundings, the larger the objective lens diameter needs to be. Check the precise product name as the number after the 'x' specifies the objective lens diameter in millimetres. For example, a device with the suffix 10x42 has an objective lens with a diameter of 42 mm.VARIABLE MAGNIFICATIONVariable magnification makes it possible to adjust the magnification flexibly within a specific range. In contrast to fixed magnification, it allows you to zoom from the lower value to the higher value. However, as the magnification increases, the field of view, i.e. the image section, becomes smaller. Check the precise product name as the number in front of the 'x' specifies the magni