Zeiss Terra ED 10x42 Binoculars - GrayThe Terra ED 10x42 Binoculars Gray gives a color option from the standard black Physically, they vary from the original Terra only in that it has a new design in the rubber armoring that has a pebbly texture on the grip, and its case is now standard rather than an optional accessory. Otherwise, the Terra is unchanged. Its 330' field of view, 5. 25' close focus, and water and fog proofing are the same as those that made the Terra popular.