Optrel® Vegaview 2.5A world record ADF with shade level 2. 5 812: The Optrel Vegaview 2. 5 makes the welders most desired wish come true: bright view. With its unrivaled brightest ADF view at opening shade level 2. 5, the Vegaview 2. 5 improves the visibility of welders environment by 400%! Compared with traditional auto darkening welding helmets, the Vegaview 2. 5 sets the world record in the light state! Thanks to a special UV IR filter, the Vegaview 2. 5 offers a real