Nauticam port extensions to adapt various lenses to fit one port. These lock in place with port and housing. Comes in N120 (DSLR), N100 (mirrorless) and N85 (micro 4/3rds) mount sizes. Includes cover, extra oring and silicone grease.
Underwater Camera Floods: Avoiding the High Water Mark
No subject scares underwater photographers more than having an expensive housed camera turn into an aquarium. Even a bit of water can turn electronics into a corroded mess.
Here are a few general tips on maintenance that should help you avoid finding Nemo in your housing