Flex 4K

High Speed 4K Underwater Imaging

 Designed specifically for the Phantom Flex 4K camera, the Gates Flex 4K housing provides underwater imaging at 4K resolution and an unprecedented 960 fps. Fast action sequences like predation and feeding are a super slow motion delight. Developed in close collaboration with Vision Research Inc the Flex 4K housing includes integrated features like remote run / stop and full camera menu access. Of course Gates benchmark 2 year renewable warranty and legendary reliability are standard with the Flex 4K housing.

Professionals the world over know that failure is not an option.  From research to broadcast TV and cinema productions, they never take a chance...they take a Gates!

Compatible Cameras:  Vision Research Phantom Flex 4K

Key Features

Durable Feature #2


"Bulletproof" machined aluminum, black type III 'hard' anodize finish and sealed with a nickel-acetate process.

Mechanical Controls

User friendly field serviceable controls

User friendly field serviceable controls are 100% mechanical -- no complicated mechanisms or electronics to fail.

Simplicity = Reliability  

TVL 55 Monitor Case

The TVL55 External Monitor housing is included with the PF4K.  It is designed specifically for the TV Logic VFM-058W field monitor. 

Precision Optics

Precision Ports™

Quality optics means clarity, sharpness and NO vignetting (cutoff dark corners) to spoil your images.

Extensive Accessories

Accessories Suite

An extensive set of accessories is available for cinema, natural history, broadcast TV, research, military and many more applications.

2 year warranty

2-Year Warranty

Only Gates offers a 2-year, renewable warranty on all housings.

Arri 8r copy

Extensive Lens Support

Many PL mount lenses are supported in the PF4K Housing.  (Contact Gates for details).

Gates Recommended Lenses for 80-series ports.

Adjustable Buoyancy Trim

Adjustable Buoyancy and Trim

Add /remove trim weights for ideal buoyancy and balance -- a key to stable, fluid shots.

Adjustable Handles

Adjustable Handles

Adjust the handles for perfect grip and convenient access to controls.

Seal Check II Index Page R1

Seal Check II

The Gates Seal Check II is included with the Flex 4K and assures housing integrity before entering the water.

Learn more....

Field Service Icon

Field Serviceable

Gates products are nearly 100% serviceable in the field.  



Controls (All Mechanical)
  • Power On/Off
  • Remote Trigger (LOOP mode) and Record/Standby (R/S Mode)
  • Soft Keys x 6
  • Assign 1 / 2
  • Record
  • Select / Set Roller
  • Playback
  • Lock
  • Tools
  • Back
  • Direct lens coupled (manual) Iris
  • Direct lens coupled (manual) Focus
  • Direct lens coupled (manual) Zoom
Dimensions: Basic Shell

Transport size with 8" dome, PE286

  • 19.7" L x 11.5" H x 11.9" W ”
  • 50 cm x 29.2 cm x 30.2 cm

Fully Assembled with monitor, handles, 8” dome, PE286

  • 19.7" L x 17.7" H x 16.5" W ”
  • 50 cm x 49.5 cm x 41.9 cm
  • Machined Aluminum, Type III Hard Anodized finish.
  • Stainless steel hardware.
Weight in Air
  • 33 lbs / 19.5 kg (complete w/camera)
Weight in Water
  • Fully adjustable buoyancy / trim
Depth Rating
  • 200 feet / 61 meters.
  • Hawkwoods RP-150 / RP-165.
  • Other V-Lock types (contact Gates for details).
Included Items
  • External LCD Monitor shell only(LCD not included)
  • Gates [infopopup:seal-check] system
  • Pelican Case
  • Tool & O-Ring Kit
Equipment Required

(Basic set. See Supported Equipment  for more info)

  • Vision Research Flex 4K Camera
  • Cinemag
  • TV Logic VFM-058W
  • V-Lock type battery
  • LENS of choice (contact Gates for details)

Monitor Options


TVL55 External Monitor

The TVL55 External Monitor is a compact, feature-rich external monitor option for Gates broadcast and cinema caliber underwater imaging systems. Designed specifically for the TV Logic VFM-058W field monitor  (not included), the TVL55 is a full 1920x1080 resolution on a 5.5" / 14cm diagonal display.  A variety of focus and exposure tools are available like false color, zoom, peaking, vectorscope and waveform.  Three assignable buttons give quick access to your favorite, most used functions.  Of course the TVL55 is backed by Gates 2 year professional, renewable warranty and legendary customer service.

Designed for TV Logic VFM-058W Field Monitor

with access to full menus and assignable controls.

Water Blocked Cable

has a tough polyurethane jacket.  A Gates original design.

LCD 5.5in Full HD
Full 1920x1080 Resolution

on a 5.5in / 140mm diagonal display.

Focus and Exposure Tools

Vectorscope, waveform, peaking, false color and zoom.  

Battery life
2.5 Hour Run Time

from two Canon LP-E6 low profile LiOn batteries.

2 year warranty
2-Year Warranty

Only Gates offers a professional 2-year renewable warranty on all housings.  

  • TV Logic VFM-058W Field Monitor (not included)
  • Assignable x 3
  • Menu / Menu Roller
  • Power
  • 7.5"W x 6.8"H x 4.3"D
  • 19cm W x 17.2cm H x 11cm D
  • Gates HD-SDI Bulkhead Connector
  • Two Canon LPO-E6 low profile batteries.
  • Run time 2.5 hours.
  • Other battery options available by custom order.
  • Machined Aluminum, Type III 'Hard' Anodized finish
  • Stainless steel hardware
  • Marine grade cable with polyurethane jacket and water block
  • Dry: 4.1lbs / 1.7 kg
  • In Water: 1 oz / 28g negative.
Depth Rating
  • 450 feet / 137 meters
  • 2-Years Renewable

TVL55 Feature Sheet

Port Options

The best camera in the world can't make up for poor optics. Poor optical design and materials introduce ‘image killers’ – distortions, aberrations, degraded resolution, or vignetting.  Gates family of Precision Ports are sharp and clear: the finest optics for the finest underwater images.  No image killers. Professional to amateur, super wide to macro, Gates Precision Ports suit a wide range of needs, conditions and experience. Of course all ports are backed by our legendary customer support and the same standard of excellence expected of all Gates products.


FP80 Flat Port

Due to its larger front element, the FP80 supports a variety of medium to macro lenses – including external zooms. A simple, versatile port option.  Both Acrylic (Perspex) and Glass versions available.  

Versatile Port

The FP80 supports a wide range of lenses for medium to macro imaging. 

AR Coated Glass

BK7 glass element with Anti Reflective (AR) coating is optional.

FP80 Shades

Shade choices include W075 (standard) and Macro (optional)

FP80 Replaceable Element
Field Replaceable

The FP80 element is user-changeable in the field.

  • Optical grade Acrylic / Perspex (standard)
  • Anti-reflective (AR) coated BK7 glass (optional)
Element Diameter / Clear Aperture:
  • 7.4in / 189mm
  • W075 (standard)
  • Macro (optional)
Depth Rating
  • 450ft / 137m
Optical Notes
  • Flat ports reduce Field of View (FOV) 20% underwater.
SP80 6Wx300dpi

SP80 Standard (Dome) Port

The SP80 preserves field of view (FOV) underwater, and is ideally suited for wide to fisheye imaging.  Medium to macro, too, when paired with a macro zoom lens.  Anti-Reflective (AR) coated glass or optical grade Acrylic (Perspex) versions, the latter field serviceable / replaceable.

Versatile Port

For medium to wide and fisheye imaging, the SP80 supports a wide variety of lenses

SP80 6Wx300dpi
AR Coated Glass

The SP80 is available with either Acrylic / Perspex dome or BK7 Anti-Reflective (AR) coated glass domes. 

SP80 Replaceable Dome
Field Serviceable

Field Serviceable and replaceable dome (acrylic / Perspex only)

Material Options
  • Acrylic / Perspex
  • Anti-Reflective (AR) coated BK7 glass
Element Diameter / Clear Aperture
  • 7.5in / 190mm
Dome Spherical Diameter
  • 8in / 203mm
Depth Rating
  • 450ft / 137m
SP80-10 Dome Port

SP80-10 Dome Port

The SP80-10 is a 10in / 254mm spherical dome port that, like it's smaller SP80-8 sibling preserves field of view (FOV) underwater for wide to fisheye imaging.  The SP80-10 however, exhibits superior compatibility with rectilinear lenses, mitigating the soft corners classically found with dome ports in general.  This particularly beneficial with certain cinema PL mount glass like Arri Master Primes and Ultra Primes.

The SP80-10 is available in Anti-Reflective (AR) coated glass only.

Versatile Port
Superior Rectilinear Compatibility

For medium to wide and fisheye imaging, the SP80-10 excels at rectilniear imaging, particularly with PL mount cinema lenses.

SP80 6Wx300dpi
AR Coated Glass

The SP80-10 is made of optically pure BK7 Anti-Reflective (AR) coated glass domes. 

SP80 Replaceable Dome

The SP80-10 is compatible with hundreds of lenses. 

Material Options
  • Anti-Reflective (AR) coated BK7 glass
Element Diameter / Clear Aperture
  • 7.5in / 190mm
Dome Spherical Diameter
  • 10in / 254mm
Depth Rating
  • 450ft / 137m
custom ports art

Custom Port

Gates Precision Ports extend to custom designs for specific applications like underwater UV imaging or Corrective Optics (CO) that adapt a specific lens for underwater imaging, and eliminating distortions / aberrations.  Contact Gates to discuss your particular application.

Included Accessories

Seal Check II Index Page R1

Seal Check II

The Gates Seal Check II is included with every DEEP DRAGON and assures housing integrity before entering the water.

Learn more....

TVL44 Render

TVL55 External Monitor Case

The TVL55 External Monitor housing is included with the PF4K.  It is designed specifically for the TV Logic VFM-058W field monitor.  

Carry Handle

Carry Handle

Easy grip, transport and handling.

Spare Kit

Spare Kits

O-rings, tools, hardware

Travel Case

Travel Case

Travel Case(s) have rollers and retractable handles.

Optional Accessories

Port Rings

Port Extenders

Supports a variety of PL mount lenses.

HD-SDI Cable 3Wx150dpi

HD-SDI / UHD-SDI Surface Feed

Need topside DP monitoring? High speed digital SDI video feed is available.  50 to over 300 feed, the link includes gold contact connectors and certified coaxial cable. 

Knob Extension

Knob Extensions

Finer control of focus and iris, even with gloves.

Water Alarm

Water Alarm

An extra measure beyond [infopopup:seal-check], the Gates Water Alarm provides both visible and audible warnings.  The siren is coupled directly to the housing shell and resonates directly to the water, rendering it unmistakable to a diver.

Tripod Adapter

Tripod Adapter

Use your own underwater tripod with this adapter.  

GT14 FC 6Wx300dpi sq


New Gates underwater lights available in 2014.  



Special modifications are routine. You really can have it ‘just the way you like’.

Flex 4K Supported Equipment


Flex4K Camera

Vision Research Camera

Phantom Flex 4K


Hawkwoods RP-150
Hawkwoods RP-165
Third Party V-Locks (contact Gates for compatibility)



TV LOGIC VFM-058W (optional, in TVL55 External Monitor)