Currently it appears that Zeiss are unable to provide an own brand objective cover/sunshade for the 56mm diavari
By shear chance at the weekend I was cleaning my MK4 50mm Leupold and had to take the sunshade off.
I thought I would try it on my Zeiss and can you belive it but it fits and screws up tightly. So until Zeiss get their act together you can fit either the 2 or 4 inch Leupold sunshade and then fit their excellent range of Allumina screw in filters etc. Or attach a old type Butler Creek or Bushwacker cover.
I hope this is of help to other Zeiss owners.
I will try to take/upload some pictures.
Also a 50 mm Leupold sunshade fits 50 mm Meopta scopes.
The sunshade I used was the post 2004 version 4"