Bring your Sony a7R IV mirrorless camera beneath the waves to capture the beauty of the undersea world with the Sea & Sea MDX-a7IV Underwater Housing with Vacuum Pump Leak Alarm. It comes equipped with fiber-optic and sync cord strobe connectors and supports the optional, internal Optical YS Converter S1, which provides TTL capability with Sea & Sea YS strobes (Sony adapter required). Grip Plus silicone grip inserts permit firm, steady handling of the housing, and smart yellow highlights guide your eye to key controls. Mechanical levers, push buttons, and dials provide access to virtually all camera functions. Both grips are topped with SA8 Fixed Ball Bases for attaching arms to hold strobes, lights, etc.

Built for durability, the housing is constructed from precision-machined aluminum that has been anodized for resistance to corrosion. The housing is designed with a buoyancy pocket that reduces its weight underwater or can accommodate a mobile battery charger for more shooting time. The vacuum pump leak alarm unit, which was previously available as an option, is now included as standard equipment. It is effective not only for the early detection of underwater flooding accidents but also for the protection of equipment by checking its waterproof performance before entry.

The MDXL-a7IV ships without a required lens port, and accepts a series of interchangeable ports for various lenses. For compatibility details, see the Port Chart. The housing ships with the 0.5x optical viewfinder, but optional 0.66x, 0.8x, VF45, and VF180 viewfinders can be added on to enhance your view for better shot composition underwater.

Depth Rating: 328'    Silicone Grip Inserts & Fixed Ball Bases    Sync Cord & Fiber-Optic Compatible    Supports YS Converter S1 for TTL    Access to Most Camera Functions    Precision-Machined, Anodized Aluminum    Interchangeable Lens Port System    Lens Port Required    Accepts Optional Viewfinders

• Depth rating: 328'
• Vacuum pump leak alarm unit is effective not only for the early detection of underwater flooding accidents but also for the protection of equipment by checking its waterproof performance before entry
• Built to be durable, the housing is precision-machined from anodized aluminum alloy for resistance to corrosion
• Equipped with two sacrificial zinc anodes that will corrode to protect sensitive parts of the housing

• Configured with dual fiber-optic cable ports and 2-pin sync cord connector for external strobes
• Supports optional, internal Optical Converter S1 for TTL-capability
• Sync cord connector allows for manual flash exposure

• Ergonomic, mechanical controls, including levers, push buttons, and dials, provide access to virtually all camera functions, including diopter adjustment dial
• Important controls, such as front dial, rear dial, C1 lever, C2 lever, and AF-ON, are easily accessible while you're holding grips
• Grip Plus silicone grip inserts for firm, comfortable handling
• SA8 Fixed Ball Base on each grip for attaching arms/accessories
• Most levers and buttons will glow in dark environments for quick and easy identification
• Buoyancy pocket reduces underwater weight or accommodates the mobile battery charger

• Ships without a required lens port
• Accepts a series of interchangeable ports for various lenses
• For compatibility details, see the port chart linked above

Related Questions and Answers

Q: 1. Will this arca base plate slide & fit into the DJI RS2 platform?

A: Yes the SmallRig Baseplate for Sony a7 IV is Arca compatible and the DJI RS2 uses a dual-layer Manfrotto plus Arca-Swiss camera mounting system. So it is compatible.

Q: 2. Can anyone tell me if this bag comes with any inserts at all? What's the point of this backpack without the dividers?

A: The Shimoda Designs Explore 60 Backpack comes with an accessory strap, multiuse pouch, and Limited 5-Year Manufacturer Warranty.

Q: 3. what is the difference between the PSLO-a7RIV and the PSLO-a7RVN?

A: Sunwayfoto Dedicated L-Bracket for Sony a7R IV and the PSLO-a7RIV are about the same and the latest version is the SUPSLOA7RIVN.

Q: 4. Hello, do you sell the front cover and gear cover too? Thanks Regards Antonio

A: We do sell certain focus gears and other accessories to go with this port. Please reach out to our personnel by phone, chat, or email with specific information regarding the lens(es) with which you'd use those as they are lens-specific.

Q: 5. IS this compatible with the new a7r5?

A: No, the Aquatech EDGE Sports Housing is not compatible with the Sony A7R V.

Q: 6. Does the EVF have waveform and focus peaking?

A: Yes it does. The EVF includes both a waveform and focus peaking.

Q: 7. Will this snoot work with ys-d2j strobe?

A: The Sea & Sea Snoot for YS-D3 Lightning Underwater Strobe will not fit the Sea & Sea YS-D2J.

Q: 8. So the rig comes with the EVF? The picture on B&H has it grayed out.

A: No, The following comes included with the Zacuto ACT Recoil Rig for Sony a7R IV bundle. The EVF is sold separately. Zacuto ACT Baseplate Zacuto ACT Camera Plate 2 x 15mm Rod Limited Lifetime Warranty Zacuto Right-Hand Wood Trigger Grip Limited Lifetime Warranty Zacuto Axis Micro EVF Mount Limited Lifetime Warranty Zacuto Tactical Handle Limited Lifetime Warranty Zacuto Camera Cage for Sony a7R IV Camera Hand Strap HDMI Cable Clamp Camera Mounting Screw Limited Lifetime Warranty

Q: 9. Does this also fit with the Vello grip? (As is well-known, the Sony grip does not fit the 7R5 correctly)

A: The Sunwayfoto Custom L Bracket for Sony a7R V, a7R IV with Battery Grip will work with any compatible battery grip on the a7R IV and a7R V.

Q: 10. Can I put a Large DV Core Unit (https://www.bhphotovideo.com/c/product/1525381-REG/shimoda_designs_520_216_core_unit_large_dv.html/specs) in this Explore60?

A: The Shimoda Designs Large DV Core Unit is too large to fit in the Explore 60 Backpack.