The Isotta OM System OM-5 II Underwater Housing is a precision-machined red anodized aluminum housing built for taking the OM System OM-5 II mirrorless camera below the surface. It is ideal for divers who want a small Micro Four Thirds system that can be configured for macro, wide-angle reef photography, fish portraits, and travel-focused underwater shooting.
In real diving conditions, the value is in the details: a secure single-hand rear closing knob, detachable back, double O-ring control sealing, moisture alarm, accessory ports, and a removable B102 bayonet port mount that let you build a dependable underwater system around your camera and lenses.
- Best for: OM System OM-5 II owners building a compact aluminum underwater camera system.
- Main advantage: Durable anodized aluminum body with Isotta’s straightforward, diver-friendly control layout.
- Compatibility note: Lens, port, extension ring, zoom gear, and lighting compatibility vary by setup — contact Bluewater Photo to confirm your exact system.
- Major differentiator: Two M16 accessory holes, two fiber optic connections, removable bayonet port, and 100m depth rating in a compact body.
- Important tradeoff: Ergonomic side handles are not included and must be added separately if you want a full dual-handle tray setup.
- Strobe note: Fiber optic connections are standard, but an optional trigger is required to fire strobes.
Quick Specs
OM System OM-5 II
Red anodized aluminum body
100 meters / 328 feet
Two fiber optic connections; optional trigger required
Two M16 holes, one upper M8 hole, two lower M6 holes
Removable Isotta B102 bayonet
Moisture sensor with LED indicator; port safety lock
178mm x 189mm x 106mm
Compatibility
Works With
- OM System OM-5 II camera body
- Isotta B102 bayonet port system
- Isotta and INON X-2 compatible external viewfinders
- Fiber optic strobe triggering when paired with the proper optional trigger
Requires
- Correct Isotta port, extension ring, and gear for your chosen lens
- Optional trigger to use strobes through the fiber optic connections
- Arms, clamps, tray, or handles depending on your lighting configuration
- Vacuum system, bulkhead, or monitor accessories if your build requires them
Optional Gear
- Dual handles or tray system
- Vacuum leak detection system using an M16 port
- Nikonos or S6 bulkhead options
- Monitor connection accessories
- Focus light mount using the upper M8 accessory point
Camera Controls That Feel Natural Underwater
Underwater, you do not want to hunt for controls while your subject is moving or your buoyancy is changing. The Isotta housing uses aluminum buttons and dials with engraved symbols matching the camera controls, making it easier to adjust settings without breaking concentration.
- Engraved symbols mirror the camera control layout
- Aluminum controls are precise and glove-friendly
- Detachable rear housing helps simplify camera installation
- Tray with lock keeps the camera aligned during insertion
Built for Real Dive Conditions
The Isotta OM System OM-5 II housing includes double O-ring seals on buttons and removable parts, plus a moisture sensor with LED indicator for extra confidence.
- 100m working depth for recreational and technical dive profiles
- Double O-ring sealing on buttons and removable parts
- Moisture sensor with LED indicator and replaceable battery
- Wide rubber-covered feet help stabilize the housing on boats or the seafloor
Room to Build the System You Actually Dive
Most underwater shooters eventually add accessories: handles, strobes, a focus light, a vacuum valve, a monitor, or a different viewfinder. This Isotta underwater housing gives you practical expansion points without turning a compact OM-5 II kit into an oversized rig.
- Two M16 holes for vacuum systems, monitors, or bulkheads
- Upper M8 hole for focus lights and other accessories
- Two lower M6 holes for brackets, strobe trays, or tripods
- External viewfinder support for Isotta and INON X-2 compatible options
Why Buy Your Isotta Housing from Bluewater Photo?
Underwater housings are system purchases, not just single products. Bluewater Photo helps verify camera fit, lens port compatibility, strobe triggering, vacuum options, and accessory mounting so your isotta camera housing arrives ready to build into a dependable underwater setup.
Isotta has a strong reputation among underwater photographers for durable aluminum housings, precise controls, and practical mechanical design. Bluewater Photo adds real support before and after the sale, especially when you are matching ports, lenses, strobes, and accessories.
Content reviewed by Bluewater Photo staff, recognized as the #1 online retailer specializing in underwater photography and scuba diving equipment, with real-world experience supporting, selling, and configuring underwater camera systems.
Ready to Build Your OM-5 II Underwater System?
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Specifications
Build
- Red color anodized aluminum body
- Back housing completely detachable from front housing
- Single-hand closing knob for rear housing
- Wide rubber-covered feet
- Working depth: 100 meters
- Dimensions: 178mm x 189mm x 106mm
Controls & Viewing
- Aluminum buttons and dials
- Engraved symbols identical to camera controls
- Wide back display viewfinder glass
- Standard Isotta viewfinder
- External viewfinders can be mounted
- Compatible with Isotta and INON X-2 compatible external viewfinders
Ports & Accessories
- Removable port B102 bayonet
- Safety lock on porthole to prevent accidental opening
- Two M16 holes for accessories such as vacuum systems, monitors, Nikonos, or S6 bulkheads
- M8 hole on upper side for accessories such as focus lights
- Two M6 holes on bottom side for brackets, strobes, or tripods
Sealing & Alerts
- Double O-ring seals on all buttons and removable parts
- Moisture sensor with LED indicator
- Replaceable battery for moisture sensor
Lighting / Triggering
- Two fiber optic connections standard
- Optional trigger required to use flash/strobe firing
Included / Not Included
- Tray with lock for easy camera insertion
- Ergonomic side handles not included
- Ports, gears, strobes, arms, and trigger sold separately unless bundle
- Housing
- Front lid
- Standard ISOTTA viewfinder
- Humidity sensor
- Fiber optic connection bulkhead (to use the flash needs an optional trigger)
- Replacement O-ring kit
- Silicone lubricant 15gr / 0,5 oz
- Warranty: 2 years manufacturer's (excluding batteries)
Frequently Asked Questions
Does this housing fit the OM System OM-5 II?
Yes, this Isotta underwater housing is for the OM System OM-5 II camera body. Camera body revisions and control changes can matter, so contact Bluewater Photo if you need us to verify your exact camera setup.
Do I need a port to use this housing?
Yes. The housing uses a removable Isotta B102 bayonet port system, and the correct port, extension, and gear depend on the lens you plan to use.
Are handles included?
No. Ergonomic side handles are not included, so add the appropriate tray or handle system if you plan to shoot with strobes, video lights, or a more stable two-handed rig.
Can I use strobes with this housing?
Yes, the housing has two fiber optic connections as standard. An optional trigger is required to fire strobes, and you will also need compatible fiber optic cables.
Can I add a vacuum system?
The housing includes two M16 holes for accessories such as vacuum systems, monitors, Nikonos, or S6 bulkheads. Confirm the exact valve or accessory before ordering.
How should I maintain this Isotta underwater housing?
Rinse it thoroughly in fresh water after diving, operate the controls during the rinse, and inspect O-rings before each dive day. Keep the sealing surfaces clean and replace worn O-rings as needed.
Should I choose this over another underwater housing?
Choose the Isotta if you want a compact aluminum housing with practical accessory expansion and a strong mechanical control layout. If budget, port compatibility, or an existing housing ecosystem is the priority, ask Bluewater Photo to compare options for your full kit.
