This +1 EVF Anti-Fog Diopter from Zacuto allows you to customize the Gratical EVF to your eyesight by increasing the viewfinder magnification range. Use the diopter to boost the magnification from the original +4 maximum to a +5 factor. The diopter features an anti-fog coating and can be used with the EVF's Anti-Fog screen to further decrease the fogging sometimes caused by high humidity, an extreme change in temperature, etc.
Gratical X (Z-GRX)
Gratical Eye (Z-GRE)