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Sony a7 IV Underwater Housing by Sea&Sea

Sony a7 IV Underwater Housing by Sea&Sea
Sony a7 IV Underwater Housing by Sea&Sea
Photos show accessories that are not part of your order. Only the content of the tab "What's in the box" is relevant.
Sony a7 IV Underwater Housing by Sea&Sea
Sony a7 IV Underwater Housing by Sea&Sea

€5,295.00*

Prices incl. VAT plus shipping costs

Free shipping

Delivery time: 12 days*

Product number: SEA07121
HAN: MDX-α7IV U

Universal compatibility(*) with Sony Alpha series.

The future-oriented mirrorless SLR compatible housing is now fully loaded.

(*) For other Sony Alpha cameras customize kits a needed. Please contact us.

Enhancement Customization Kit

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

Universal design for the future 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. 

Full range of standard equipment

Grip Plus made of silicone material. Robust yet secure fit to hold the housing in place.

Lighting can be deployed as desired from the SA8 fixed ball base. Pre-equipped with lanyard hooks for convenient transportation. 

Newly designed fiber-optic 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. 

Leak Alarm Unit as standard equipment

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.

Strobe Synchro System

The fiber-optic cable connection enables manual firing of the YS strobe.

Compatible with optional Sea&Seas “Optical YS Converter S1” 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.

YS strobes can be electrically connected with a sync cord with an optional electrical Connection. Please contact us for any futher questions.

Focus Point Movement Settings

To perform "focus point operation" during shooting, please make a custom setting for the focus point in the dial customization of the camera in advance. The focus point can be moved by operating the front/rear dial.

Other Features

  • The Port Lock prevents the port from turning or loosening and the Port Lock lever is specifically located to avoid being unlocked accidentally.
  • The housing is equipped with a lens-lock release button which makes it possible to change lenses easily, without opening the housing.
  • Pulling out the Focus/Zoom Dial gives sufficient room inside the housing to easily accommodate larger diameter lenses.
  • All controls have luminescence stickers which glow in dark environment.
  • Equipped with the Optical Viewfinder 0.5x as standard. Other optional viewfinders such as the VF180 1.2x, VF45 1.2x and Optical Viewfinder 0.66x, 0.8x can be used.
  • ※Some vignetting occurs.When the VF180 1.2x is mounted on housing, the uper part of the camera's viewfinder cannot be viewed due to vignetting.
  • Equipped with two sacrificial zinc diodes (one on the front case and the other on the rear) to prevent electrolysis damage.
  • Tripod screw mount is located on the centre underside of the housing.
  • Equipped with under guard to protect from scrach.
Arm Attachment: 1-inch ballhead
Body Material: aluminum
Camera System: Mirrorless (MIL)
Camera manufacturer: Sony
Strobe connector: optical Sea&Sea
Tripod connection: Thread ¼
portsystem: DX
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Technical data

  • Body: corrosion-resistant aluminum alloy (machined)

  • Grip: corrosion-resistant die-cast aluminum alloy

  • Depth Rating. 100m / 330ft

  • Dimensions (WxHxD): 330 x 169 x 137 mm / 12.9 x 6.6 x 5.4 inches

  • Weight: approx. 2,900g / 102.3oz (Housing only)


Scope of delivery

  • Sony a7 IV Underwater Housing by Sea&Sea

  • a7IV Customize Kit for MDX-aU

  • Manual optical flash trigger

  • Leak alarm unit

  • Leak alarm unit manual pump

  • CR2032 lithium battery (for leak alarm unit)

  • Silicone grease

  • O-ring remover

  • Hex wrench (6mm / for grip dismounting), Hex wrench (4mm / for Lanyard bolt), Hex wrench (2mm)

  • O-ring maintenance manual

  • Instruction manual (this manual)



Only the components of the item that are listed here will be delivered. Accessories and/or decoration shown in our images are for demonstration purposes only. In particular, we would like to point out that the purchase of an underwater housing often does not include a port or an external viewfinder. These can be purchased as accessory items. If you have any questions about the configuration of your system, do not hesitate to contact us.


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