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Universal compatibility with Sony Alpha series the MDX-aU is housing is now fully loaded.

The images are of the silver version. There will be a black released later.

Please read - Why Exposure Underwater

Please observe that you find smart associated products at the bottom of the page.
All other products and accessories are found in its specific categories.

The back panel is designed to be large.
The back acrylic panel is more than twice as large as before to improve visibility of the monitor and reduce the underwater weight. Furthermore, it is a sustainable design that can be used with new cameras in the future with minimal parts replacement.

Optical fiber cable cover.
Newly designed fiber-optic cable cover included. Prevents optical cable terminals from falling out and smartly protects light-emitting panels and cable terminals. Includes a strap to prevent loss of the cover.

Vacuum system is included
The Leak Alarm Unit, which was previously available as an option, is now included as standard equipment. It is effective not only for early detection of underwater flooding accidents, but also for protection of equipment by checking its waterproof performance before entry. CR2032 lithium battery included.

Three optional strobe connection methods.
1.Optical TTL connection - Compatible with SEA&SEA “Optical YS Converter S1” #50139 which converts the strobe light emission signal of the camera to LED light and synchronizes with the SEA&SEA YS strobe. It is a high-performance converter that does not just emit simple light-emitting signals, but also performs TTL auto light control.
2.Optical manual connection - Manual flash trigger #50146 - For those who do not need TTL photography, the fiber-optic cable connection enables manual firing of the YS strobe.
3.Electrical connection - YS strobes can be electrically connected with a sync cord. #50147 Strobe connector/N and #50122] Optional Sync Cord 2-pin Connector

Functional Limitations and Customization Kit - Depending on your camera model

Included in all models
Up/down/left/right buttons on the multi selector cannot be used.
Use the up/down/left/right buttons on the control wheel instead.
The up/down/left/right buttons on the control wheel cannot be used to move the focus point.
Focus point can be moved with the front and rear dials using the camera's dial customization function.

α1/α9II camera
Drive mode/focus mode dials are not available as standard.
It can be supported by using the optional kit.
If you want to change the drive mode etc. without modification, you can temporarily use it by registering the camera's custom shooting setting in advance and calling up the function, but it is not a perfect substitute.

α7IV Camera
The shooting mode lever cannot be used.
This can be handled by using an optional kit.
S&Q cannot be used.

If you want to modify your housing at a later date for another camera model
[Product #50148] α1 customize kit for MDX-αU

Compatible with drive mode dial/focus mode switching lever.

[Product #50149] α9II Customize Kit for MDX-αU
Compatible with drive mode dial and focus mode selection lever.

[Product #50150] α7IV Customize Kit for MDX-αU
Compatible with shooting mode selection lever.
*The α7IV customize kit cannot be used with an electrically connected strobe sync system.


One housing that fits six different Sony premium camera models - a1, a7R V, a7R IV, a7S III, a9II and a7 IV.
Description: HOUSING S&S MDX-AU SONY Fits a7IV, a1, a7SIII, a9II and a7RIV
Price: 35 850 SEK/Qty
Partno: 06209 (Add to Wish list )
Brands: Sea&Sea

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