AOI Underwater Port Extension 22mm for OM-D Mount Nikon Z7II Watch Dimension: Case diameter: 44mm

Watch Dimension: Case diameter: 44mm (without crown)

Waterproof Bulkhead Cap #9104

using the best material available and state of the art tooling

Zoom Gear Retainer #75900 (installed)

When the camera's built-in flash is used to trigger external strobes the mask around the lens will block the light from the flash which then prevents internal reflection off the front of your dome lens port

AOI Underwater Port Extension 22mm for OM-D Mount Nikon Z7II Watch Dimension: Case diameter: 44mmAOI ER OD OD 22 Extension Ring 22mm for Olympus OM D Mount Port to Olympus OM D Housing This 22mm Extension Ring from AOI enables use of the Olympus 8mm f 1. 8 Fisheye lens in an Olympus PT EP08 or PT EP11 underwater camera housing. The hard anodized aluminum ring extends the length of an AOI DLP 01 or DLP 02 dome lens port. Specifications Model ER OD_OD 22 Description Extension Ring 22mm OMD Port to OMD Mount Housing Material Hard Anodized Aluminum