Nikon D7100 Underwater Housing : Sea & Sea MDX-D7100

Sea & Sea has announced their new housing for the Nikon D7100 DSLR. The Nikon D7100 underwater housing is named as MDX-D7100.

The Nikon D7100 underwater housing model from Sea & Sea, the MDX-D7100 will be available from the end of June. The new housing features the option of a built-in YS TTL convertor and a multi selector control that mimics both the function and position of the camera’s. It also has an externally controlled port lock and a leak detector as standard.


Nikon D7100 Underwater Housing : Sea & Sea MDX-D7100 Specifications

Construction: Body: corrosion-resistant aluminum alloy (machined) / Grip: corrosion-resistant die-cast aluminum alloy.
Depth rating: 100m/330ft.
Dimensions (W x H x D): 341 x 192 x 136mm/13.4 x 7.6 x 5.4 inches
Weight: Approx. 2,700g / 94.5oz.


Press Release.

New product release: MDX-D7100

  • Optical YS Converter N can be built into the housing.
  • Compatible with new Optical YS Converter N (#50126) which converts the camera’s TTL signal to a light signal. Both TTL and manual strobe photography is possible using a fiber-optic cable. (Optical YS Converter details will be announced later).
  • Compatible with both VF180 1.2x and VF45 1.2x viewfinders
    By attaching the VF180 (#46112) or the VF45 prism viewfinders (#46111) (magnification ratio of 1.2x) to the housing, the magnification increases by 1.2x and entire field of view can be seen at the same time. Recommended for users committed to strict composition and focusing.
  • Port can be replaced without opening the housing.
    Port lock can be now activated from outside the housing. The housing is also equipped with a ‘lens-lock release’ button which allows the lens to be replaced without opening the housing. The port lock can also be activated from inside like previous SEA&SEA housings.


  • Equipped with two fiber-optic cable sockets. With the camera’s built-in flash raised and fiber-optic cables fitted, external strobes can be triggered as ‘slave units’ by the built-in flash.
  • Every detail of the housing is precision machined. The housing is protected by a highly corrosion resistant anodized coating. All edges have been polished carefully for perfection.
  • Controls all the Nikon D7100 essential functions underwater. (Bracketing button, preview button and function button are not operable from the housing).
  • The multi selector (which is often used underwater) is the same design as the camera control and can be operated in the same way. AF areas and Focus points can be changed by depressing the selector. The multi selector control is located so that it is accessible with your hand on the grip.
  • The camera’s built-in flash can be activated and deactivated from the housing. (When the accessory light-shielding plate is fixed, this function cannot be used).
  • Equipped with Accessory Port which can be used for HDMI output.
  • The grip design has been significantly improved with the travelling diver in mind. The grips are mounted with threadless fixings to facilitate easy transportation, mounting and removal of the grips. The new design also alleviates corrosion build up around the fittings. All fixings are available as spare parts.
  • Fitted with a tripod socket on the centre underside of the housing.
  • Equipped with the Optical Viewfinder 0.5x as standard. Other (optional) interchangeable viewfinders can be used.
  • The quick shoe makes the camera easy to install and remove from the housing.
  • Built-in leak sensor immediately alerts you to water ingress.
  • Depth rating of 100m / 330ft makes the housing ideal for tech diving.

    *1. The MDX-D7100 is standard with a connector cap only. Optional Sync Cord Connectors are available. External strobe(s) or the YS Converter/N can be used with fiber-optic cable or by removing the connector cap and installing Optional Sync Cord 2-pin Connector (#50122) or Optional YS Converter / N 5-pin Connector (#50123).