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Isotta Sony A7S III Underwater Housing

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  • Single-Hand Locking System
  • Double O-Ring Seal
  • Handles Included
  • Single-Hand Locking System
  • Double O-Ring Seal
  • Handles Included

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Isotta Sony A7S III Underwater Housing

The Ferrari of the Sea


"My initial thoughts after having a chance to handle the housing myself is that Isotta is well made and ergonomic. The back door is easy to open and close, port lock system is very reliable, the controls are easy to access, the housings themselves are light weight and compact design. All ports include caps and the dome ports include neoprene port covers. Isotta offers housings for a wide range camera models and I think this brand will be a great addition to our product line." 
-Tommy Stylski, Bluewater Photo Staff 

Isotta has been known to produce high quality aluminum housings and their Isotta Sony A7S III Underwater Housing is certainly no exception. The underwater housing is small & compact in size, has excellent ergonomics and is very durable. It features a unique way to open the housing with its single-hand locking system. In addition, it uses a double o-ring seal design to ensure the integrity of the housings seal.

The Isotta A7S III housing has easy access to all key/main camera controls, even with gloves on, by means of the clearly labeled lasered long-life buttons. The back door of the housing has a large glass window, allowing you to easily view the LCD screen while shooting, as well as a viewfinder display depending on your desired shooting technique. The back door is fully removable from the housing to allow the camera to fit more easily inside the housing.

Isotta Housing Features:

One Hand Open/Close 

The housings can be easily be opened and closed using Isotta's innovative single-hand locking system. The single latch closing mechanism makes it unique and very effortless to operate yet secure with its double steel pins design at the bottom of the housing.


Double O-Ring Seal

The Isotta Sony A7S III Underwater Housing utilizes the double o-ring seal design to ensure that the camera is always safe and dry inside the camera. It is always good to have a redundant o-ring on your seal to make sure that everything will be a-ok while underwater.


Comfortable Handles

A pair of comfortable and ergonomically designed handles is included with the housing. Various accessories are available that can be directly fitted on the handles to make your shooting experience great.



Other Features:

  • Back Window - The back of the housing has a large glass window to display cameras LCD clearly.
  • Camera Installation - It comes with a camera tray with locking mechanism which makes installation very straight-forward and secures the camera in place inside the housing
  • Construction - Isotta housings is made from high quality thermo-coated & anticordal aluminum, which makes maintenance very simple.

Recommended Lenses and Ports:

Read our guide to the best Sony full frame lenses for underwater

Please refer to the Isotta Port Chart for a full list of compatible ports and lenses.
**Isotta housings are also compatible with Sea & Sea ports.

Recommended Accessories:


For other options, see our other recommended strobes see our Buyer's Guide for Best Underwater Strobes

Video Lights

For other options, see our other recommended strobes see our list of best underwater video lights.


Sony A7S III Camera Specs:

  • 12 MP BSI CMOS Full Frame Sensor
  • Bioz XR Image Processor
  • ISO 80-102,400
  • "Low Base" and "High Base" (effectively dual gain) ISO capability for better low light shooting
  • 4K video up to 120 fps
  • No recording time limits. Could be limited by heat (4K @ 60p for at least an hour)
  • 10-bit 4:2:2 internal recording
  • S-LOG, HLG, Cine logarithmic picture profiles available
  • 4K @ 60p, 16-bit RAW recording with an external recorder
  • 5 axis in-body image-stabilization (IBIS)
  • Dual card slots (either SD or CFexpress Type A)
  • 9.44 M dot Electronic Viewfinder (EVF) - the best resolution on the market!
  • Movie File Formats: XAVC S (Long GOP, H.264 MP4); XAVC HS (Long GOP, H.265 HEVC); XAVC S-1 (All-Intra, H.264 MP4)
  • AF tracking with human and animal eye AF capability
  • 759 point hybrid AF system with 425 contrast detection points
  • 3" 1.44 million dots LCD
  • Weight: 21.7 oz (617g) with batteries
  • Size: 5.1 X 3.8 X 2.7 in (129 X 97 X 70mm)

Sony A7S III Camera Review:

Learn more about the camera features and why we love it for underwater video in our full Sony A7S III Camera Review.





Sony A7S III Sample Underwater Video Footage:



Sony A7S III Sample Underwater Photos:

This nudibranch rhinophore was captured with the Sigma 105mm macro, Sony A7S III camera, and Kraken +13 diopter. f/22, 1/160, ISO 100


wide angle Sony A7S III photo

Three large fish eating anemones photographed with the Sony A7S III, and Canon 8-15mm fisheye lens. f/18, 1/125, ISO 500



Fast autofocus with the Sigma 105mm is the only way to capture a photo of a decorated warbonnet.

Fast autofocus with the Sony A7S III is the only way to capture a photo of a decorated warbonnet. Photographed with a Sony A7S III, Sigma 105mm macro.  f/18, 1/160, ISO 200

Related Underwater Gear Categories:

Email us at or call (310) 633-5052 with any questions.

Weight: 5.00 LBS
Dimensions: 10.00 (in) × 10.00 (in) × 15.00 (in)
Free Worldwide Shipping: No
Brand: Isotta
Camera Type: Sony A7S III

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