Sony Alpha a7 IV, a7R V - Ikelite 200DL Housing - 71479
Sony Alpha 7 IV Mirrorless Camera
New in 2022, Sony's 4th generation affordable full frame mirrorless camera continues to build on their reputation for high quality image and video quality. A new 33 megapixel BSI-CMOS sensor provides image resolution up to 7008 x 4672.
The improved autofocus tracking system incorporates tracking Eye AF as well as some animal tracking in both still and video modes. Pattern detection, color and brightness variations are also worked into its tracking AF algorithm providing a simple and effective experience.
Unlike its predecessor, the a7 IV is capable of shooting 4K/60p video which is great for underwater work where you want to slow things down in post-production. The increased frame rate does come at a cost of sensor usage, effectively cropping the resulting footage to APS-C dimensions.
Battery life is reduced a little to 580 shots per charge when using the rear LCD (CIPA). This is still a fair bit more than its competitors in the field: the Canon EOS R6 and Nikon Z6 II. All in all the Sony a7 IV is a great camera to shoot underwater with a wide variety of lens options from Sony, Sigma, and Canon (using a Metabones adapter).
Read the Underwater Photography Guide's review of the Sony A7 IV for more information on camera performance underwater. Lens Ports
This housing features our robust Dry Lock (DL) port system. "Dry Lock" refers to the placement of the o-ring on the outside of the port mount. This improves visibility and reduces the chances of water dropping onto your precious camera sensor. DL ports are the lightest on the market, yet robust and capable of standing up to rough surf. Attachment is quick and secure. A system of extensions can accommodate a huge variety of lenses with ease.
Most popular lenses and select lens focus rings can be engaged using simple gearing that puts adjustment right at your fingertips. A large, soft-touch knob on the side of the housing makes fine tuned adjustments a breeze. and focus gears differ depending on which lens you are using. gears sold separately.
Read more: DL Port System for Sony Alpha Series Cameras Confidence
The unique rear seal design prevents accidental twisting or stretching of the o-ring for simple and confident assembly. We have eliminated the need for an o-ring groove or channel which can trap sand, dirt, or debris. Three double-passivated stainless steel locking lid snaps are simple to use and virtually unbreakable. The clear back allows you to see the o-ring form a solid, watertight seal as it closes.
Vacuum Testing
A vacuum valve is installed standard on the side of the housing. The vacuum valve is designed to be low profile to avoid interference with controls. The optional Vacuum Pump with Gauge # 47011 allows you to draw a vacuum on the housing to check for leaks prior to entering the water.
Drawing a vacuum on the system also provides extra security at the surface of the water, especially important when using the housing in rough surf. M16 Accessory Port
The spare M16 threaded accessory port provides an attachment point for third party accessories including HDMI bulkheads.
TTL Exposure
This housings supports your choice of shooting with manual strobe exposure or adding a TTL converter depending on your application. The flash bulkhead is located on the top of the case to alleviate strain on the sync cord.
You can enjoy the fastest and most accurate TTL exposure on the market by adding the DL2 DS Link Sony TTL Converter Ikelite ST1 Hotshoe Kit # 46042 and a compatible Ikelite DS strobe. Exposure compensation can be used added or subtracted in the camera.
Read more: DL2 DS Link Sony TTL Converter Underwater Photos
Reliable locking connectors between the hotshoe and bulkhead make it easy to install the TTL hotshoe or carry back up parts when traveling to remote locations. Ergonomics
Good ergonomics are critical when you need to concentrate on composition, focus, and proper exposure. Large, curved control levers put the most important controls right where you need them: shutter and autofocus (via the AF-ON button). This combination allows you to shoot with or without back button focus, an advanced technique that is useful for tack sharp focus of super macro and fast moving subjects. Each lever can be extended using the optional Trigger Extension # 4077.95 for perfect spacing when using a right-hand handle.
The rotating controls are all operated intuitively via premium soft-touch knobs. An oversized, lobed knob puts the zoom/focus knob at your fingertips while your left hand stays on the handle. Stainless steel, direct-drive rotating controls are virtually fail-safe and user serviceable and adjustable in a pinch. DOUBLEBREA