Hi M users. One of my complaints about the M6 Mark II is that I find it challenging to shoot in bright light. Shooting with the EVF is only slightly better than shooting with the viewfinder. I end up cupping my left hand over top the viewfinder to get it dark enough. I’m trying to find a rubber cup that will fit around the EVF-DC2. It looks like the Nikon DK-19 cup is circular, but I’m unsure of the diameter. Does anyone know if it will fit or if there are any products designed for the EVF-DC2?