Swarovski ME 1.7x Magnification Extender The helical focus collar provides

The helical focus collar provides variable speed focusing: fast speed for near subjects

The BaK-4 roof prisms are both phase- and dielectric coated for increased contrast and light transmission along with their fully multi-coated lenses

one each for coarse and fine adjustments allowing rapid focus changes followed by precise fine tuning

In order to free the maximum range of possible balance positions (140mm)

accurate colors

Swarovski ME 1.7x Magnification Extender The helical focus collar providesThe Swarovski ME 1. 7x Magnification Extender mounts between any ATX STX objective module and any ATX STX BTX ocular module and multiplies the standard magnification by 1. 7x. For example, with the 95mm objective and the ATX or STX zoom eyepiece, the ME 1. 7 increases the zoom range from 30 70x to 51 120x.