Sea & Sea Zoom Gear #31136 500-1000 which fits over the housing

which fits over the housing port and can be installed and removed during the course of the dive

This regulator set is crafted for regular use in diving environments and pairs well with other scuba gear

3] For over 10 years

so that tiny creatures will fill your frame

Sea & Sea Zoom Gear #31136 500-1000 which fits over the housingIf you want to use your lens zoom function while taking photographs underwater, this zoom gear should be used. This Sea & Sea Zoom Gear is used to manually focus the Sigma Macro 70mm F2. 8 EX DG lens when used in a Sea & Sea housing for any camera. Sea & Sea precision machined zoom gears are manufactured from either anodized aluminum or durable plastic polymer. Both versions are corrosion resistant. Easy to install in housing.