MDX-R5II

Photo : Dan Tonkin | Aqua Dan Creatives

This image was taken at Heron Island using the Canon EOS R5 Mark II in the Sea & Sea MDX-R5II housing, paired with the Canon RF 7–14mm fisheye (shot at 14mm). Shooting directly upward allowed me to frame Snell’s Window — that circular view you get looking up at the surface.
To get the balance right, I exposed the sky (ISO 100, f/11, 1/200 sec) and used dual Sea & Sea strobes to light the turtle from below. Without strobes, the turtle would be silhouetted against the bright surface, so the lighting helps bring back the colour and detail while keeping it natural.
The ultra-wide field of view of the RF 7–14mm makes it easy to fit both the subject and the full surface window into one frame, which really helps create that immersive feel.

All controls on the MDX-R5II are ergonomically designed to allow maximum camera operation. All major camera functions can be operated with the movement of your thumb and other fingers without removing your hand from the grip.
Your ports and gear can be used without modification with EF-mount lenses with mount adapters, so the system chart is identical to that of previous MDX SLR housings.

01. Leak alarm unit is included.

Leak alarm unit consists of two parts.
1)Leak alarm sensor
2)Vacuum valve

It is effective not only for early detection of underwater flooding accidents, but also for protection of equipment by checking its waterproof performance before dive.
All SEA&SEA housing models will ship with both the Leak alarm sensor and the vacuum valve installed as standard equipment.

>> Leak Alarm Unit Product Page

02. The controls can be operated while holding the grip.

The main electronic dial and sub electronic dial 2, which are frequently used in underwater photography, can be quickly operated.
Video shooting can also be operated while holding the grip. You can shoot videos underwater while holding the grip, so you won't miss the shutter opportunity.

03. Newly designed fiber-optic cable cover Newly designed 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.

04. Strobe Sync System

You can choose from four different flash connection methods as options.

Method 1

Optical HSS/TTL Connection

Product No. 11048 NEW

UWT HSS TTLConverter Nikon SS

When used with a compatible flash, HSS/TTL shooting is possible. In HSS mode, shutter speeds up to 1/8000 are available.

Method 2

Optical TTL Connection

Product No. 50126

Optical YS Converter/N1 for MDX housing

A high-performance converter that converts the camera's flash signal to LED light and synchronizes with YS flashes. It also supports TTL automatic exposure control.

Method 3

Optical Manual Connection

Product No. 50144

Manual Flash Trigger/CN

When TTL shooting isn't necessary, you can trigger the YS flash manually by connecting it via a fiber-optic cable.

Method 4

Electrical Connections

Product No. 50147
Strobe Connector/N

Product No. 50122
Optional Sync Cord 2-pin Connector

YS strobes equipped with a connector can be connected electrically using a sync cable.

Photo： Dan Tonkin

Camera :

Canon EOS R5 MarkII

Lens :

Canon EF15mm F2.8 Fisheye

F :

SS :

1/100

ISO :

400

Photo： Dan Tonkin

Camera :

Canon EOS R5 MarkII

Lens :

Canon EF15mm F2.8 Fisheye

F :

SS :

1/200

ISO :

100

Photo： Dan Tonkin

Camera :

Canon EOS R5 MarkII

Lens :

Canon EF15mm F2.8 Fisheye

F :

SS :

1/200

ISO :

100

Photo： Dan Tonkin

Camera :

Canon EOS R5 MarkII

Lens :

Canon EF15mm F2.8 Fisheye

F :

SS :

1/200

ISO :

400

Photo： Dan Tonkin

Camera :

Canon EOS R5 MarkII

Lens :

Canon EF15mm F2.8 Fisheye

F :

SS :

1/200

ISO :

500

A fiber-optic cable cover is included. It 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.
Port lock operation (lock/unlock) and lens release button can be pressed from the outside of the housing. Port and lens replacement can be performed without opening the housing. (except for some lenses).
Equipped with a sliding mechanism for the focus/zoom dial that releases gear engagement and allows smooth replacement of lenses with large diameters.
Super luminescent type special luminescent stickers are attached to each operating part. It glows brighter for a longer period of time with a short exposure to light than ordinary luminescent stickers.
A 0.5x pickup finder is standard. The 0.66x and 0.8x pick-up viewfinders, VF45 1.2x and VF180 1.2x can also be attached as options.
*When VF45 1.2x is attached, there will be some vignetting in the corner of the viewfinder.
*When the VF180 1.2x is mounted, there will be some vignetting at the corners and top of the viewfinder.
Three optional strobe connection methods are available.

(1) Optical TTL connection
[Product No:50143] Optical Converter for MDX/CR
Optional “Optical Converter CR” converts camera's strobe light signal to LED light and synchronizes it with YS strobe.
This high-performance converter is also capable of TTL auto exposure.

(2) Optical manual connection
[Product No:50144] Manual Flash Trigger MFT/CN
For those who do not need TTL photography, the fiber-optic cable connection enables manual firing of the YS strobe.

(3) Electrical connection
[Product No:50147] Strobe Connector/N
[Product No.50122] Sync cord 2-pin connector set
The YS strobe can be electrically connected to the YS strobe with a sync cord.
The silicone material Grip Plus is robust, yet fits securely to hold the housing in place.
The SA8 fixed ball base allows for your preferred lighting deployment. A lanyard hook for convenient transportation is also pre-equipped.
Corrosion-resistant material (zinc pieces) is installed in each front and rear case.
Tripod screw holes are provided on the bottom of the housing body.
Equipped with an under guard to protect the valuable housing from scratches.
System Chart

[Dimensions (WxHxD)] 344 x 173 x 167 mm 13.5 x 6.8 x 6.6 Inches
[Weight] Approx.2970g / 104.7oz (Including Grips).
[Depth rating] 100m / 330ft
[Construction] Corrosion resistant aluminum alloy (machined. Anodized finish)

MANUAL DOWNLOAD

You can find detailed instructions on how to operate and maintain the product.

MANUAL

MDX-R5II Housing
YS-D130R *2
Fiber-Optic Cable II M/2 Connectors *2
SA8 Fixed Ball Base *2 / SA8 Double Ball Arm M *2 / SA8 Double Ball Arm S *2 / SA8 Ball Clamp II *6
Optical YS Converter/CR for MDX housing
LX-4000SW FS
SA8 Ball Base for Accessory Shoe II / SA8 Ball Clamp II

LX-1200SW FS (BK) with LX Snoot
DX Macro Port 60 II
Fixed Ball Base *2
SA8 Double Ball Arm M
SA8 Ball Clamp *2

Spare O-ring

Product No. 62121

VF Adapter NA

Product No. 46145

Housing Lanyard IV

Product No. 46137