Marelux Sony A7 V Underwater Housing
The Sony A7 V packs a dense control layout, large lenses, and fast-paced shooting workflows into a relatively compact body—challenging requirements for any underwater system. This Marelux underwater housing solves those problems with a mechanically simplified design that prioritizes reliability, compactness, and precise control access, even with larger lenses installed.
What immediately stands out when we set this housing up in-house is how intentional the design feels. The mechanical structure is less complex than many competing housings, which makes camera installation faster and reduces alignment issues over time. The oversized 125mm port diameter—the largest currently on the market—is a real-world advantage when mounting and removing cameras with bulky lenses, especially for shooters who swap configurations frequently between dives.
From a materials standpoint, Marelux underwater housings strike an excellent balance between strength and weight. The uniquely anodized aluminum alloy body offers strong resistance to scratches and seawater corrosion without becoming excessively heavy. Ergonomics are also best-in-class: all major camera controls, including AF-ON and Q Menu, fall naturally under the fingers, which matters when shooting fast-moving subjects or adjusting exposure mid-dive.
- Best for: Technical underwater photographers using larger lenses who want a compact, mechanically efficient housing system
- Not for: Shooters expecting universal port compatibility across brands or who don’t want to follow a port chart
- Key benefit: 125mm port opening dramatically simplifies camera and lens installation
- System benefit: Integrates directly with Marelux accessories like the 180° Smart Viewfinder
- Real-world nuance: The simplified mechanical structure reduces long-term wear, but correct port and gear selection is still critical for smooth operation
Key Features:
Housing Locking System
The dual locking sytem design provides security and minimal effort to lock your housing. In addition, it has a special feature which prevents accidental unlocking but still very easy to open if you need to change your battery or memory card.
Port Locking Design
Secures your port and port extensions in place with one simple click with its built-in locking system.
Flash Trigger (not included)
The optional flash trigger converts the electronic signal from your camera into a light signal which triggers your strobe. The flash trigger also has a very long battery life - 10,000 triggers with the (2) CR2032 batteries
Camera Plate
The housing comes with a quick-release camera plate which makes camera installation a breeze. Also, the plate locks in place to the housing and can be easily be installed and removed. Once in place, the camera is secure to the housing.
Perfect for…
- Photographers shooting fast-changing ambient light scenes
- Macro shooters who rely on tactile focus or exposure adjustments
- Divers building a long-term Sony mirrorless system
Content reviewed by Bluewater Photo staff for real-world use and compatibility.
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If you value precision control and system consistency, this Marelux housing is built to support that workflow.
Learn More — Guides & Articles
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- Best underwater strobes for 2025 — guide to the best strobes available in 2025
- Best Video Lights for 2025 — our favorite continuous lights.
- Sony A7 V Underwater housing options - all the available housings for the Sony A7 V Camera
- Material: Anodized Aluminum Alloy
- Dimensions: 334.6mm (W) x 189.8mm (H) x 132.3mm (D)
- Weight In Air: 3.0kg
- Depth Rating: 100m
- Port Mount: Series 5
- 55201 Housing Mounting Ball x 2
- 12003 Main Housing O-Ring x 1
- 41201 Vacuum Detection/Moisture Alarm with CR2032 battery x 1
- 54401 Lubricant x 1
- 54101 Housing Hard Case x 1
- Set of Allen keys x 1
