True internal focusing of central diopter
The diopter compensation is a real inner focusing, which makes the SHG binoculars robust, waterproof and dustproof. The diopter is permanently adjustable.
Non-slip focusing wheel
The focus point can be set perfectly, not too easily and not too stiffly. The adjustment path is deliberately chosen to be slightly wider so that the absolute visual acuity can always be set successfully.
Generous fields of view, razor-sharp right to the edge with hardly any distortion. Field flattener eyepieces shift the foci of the Petzval field curvature so that they lie in the same plane.