AquaTech Base II Underwater Housing and Sony Alpha a7 III Mirrorless Digital Camera Body Kit

BH #AQB2HKSA73CK (B&H Kit)
AquaTech Base II Underwater Housing and Sony Alpha a7 III Mirrorless Digital Camera Body Kit
Key Features
  • Depth Rating 33'
  • Pistol Grip with Focus & Shutter Trigger
  • 24MP Full-Frame Exmor R BSI CMOS Sensor
  • UHD 4K30p Video with HLG & S-Log3 Gammas
Capture 24MP photos and UHD 4K30p video in the surf or beneath the surface with this AquaTech Base II Underwater Housing and Sony Alpha a7 III Mirrorless Digital Camera Body Kit from B&H. The housing is depth-rated to 33', comes with a lens port, and its pistol grip features focus and shutter control buttons. The camera features 693-point phase-detect autofocus, built-in 5-axis image stabilization, and a fast 10-fps continuous shooting rate. Grab your favorite lens and you'll be ready to capture the action.
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$2,993.00

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AquaTech Base II Underwater Housing and Sony Alpha a7 III Mirrorless Digital Camera Body Kit

Rob S., B&H Photo Expert

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AquaTech Base II Overview

Capture 24MP photos and UHD 4K30p video in the surf or beneath the surface with this AquaTech Base II Underwater Housing and Sony Alpha a7 III Mirrorless Digital Camera Body Kit from B&H. The housing is depth-rated to 33', comes with a lens port, and its pistol grip features focus and shutter control buttons. The camera features 693-point phase-detect autofocus, built-in 5-axis image stabilization, and a fast 10-fps continuous shooting rate. Grab your favorite lens and you'll be ready to capture the action.

AquaTech Base II Housing Kit for Sony a7 III, a7R III & a9

Designed for shallow water and surface use, the AquaTech Base II Housing Kit for Sony a7 III, a7R III & a9 keeps underwater photography simple, so you can concentrate on getting the shot. Shutter and focus are controlled by a trigger on the M3 Pistol Grip, with the same operational feel of a camera's shutter button, just press halfway to focus and all the way for shutter release. The rest of the camera's controls must be preset or set to automatic.

Included in the kit is AquaTech's P65 flat lens port, which accepts a range of prime lenses with maximum lengths up to 63mm. The housing is constructed from durable but lightweight polyurethane, with stainless steel, anodized aluminum, and plastic controls. The port is made of Delrin with an optical acrylic element.

Use and Handling

  • Depth rated 33'
  • Designed for shallow water and surface use
  • Pistol grip with shutter and focus trigger
  • All other controls must be preset or auto
  • Half-press trigger mimics a camera shutter button

Lens Port

  • P-65 lens port
  • Delrin construction with optical-grade acrylic element
  • Compatible with prime lenses up to 63mm long, including Sony 35mm f/2.8
  • Housing can be used with AquaTech P/PD series lens ports and zoom gears

Construction Details

  • Durable yet lightweight polyurethane housing
  • Stainless steel, anodized aluminum, and hard plastic controls
  • Measures 7.5 x 6.8 x 5", weighs 4.6 pounds
UPC: 810778013665

Sony Alpha a7 III Mirrorless Digital Camera (Body Only)

Distinguished by its updated sensor design, the Alpha a7 III Mirrorless Digital Camera from Sony is a well-rounded camera suitable for both photo and video applications in a variety of working situations. Refined for improved speed and low-light performance, the full-frame 24.2MP Exmor R BSI CMOS sensor and BIONZ X image processor pair to realize an impressive 10 fps continuous shooting rate and improved autofocus performance for faster, more reliable subject tracking along with wide frame coverage. This updated Fast Hybrid AF System employs a combination of 693 phase-detection points and 425 contrast-detection areas for quicker acquirement of focus in a variety of lighting conditions, and also maintains focus on subjects more effectively. In addition to speed and AF, the processing improvements also help to realize greater image clarity and reduced noise throughout the sensitivity range from ISO 100-51200, which can further be expanded to ISO 50-204800. Video recording capabilities have also been extended for enhanced quality when recording UHD 4K video with the full width of the full-frame sensor to minimize moiré and aliasing. Additionally, benefitting both stills and video operation, the a7 III utilizes a 5-axis SteadyShot INSIDE sensor-shift image stabilization, which is now effective to minimize the appearance of camera shake by up to 5 stops.

Beyond just updates to the imaging system, the a7 III's body design has also been revised to include a rear 3.0" 922k-dot touchscreen LCD, which has a tilting design to better support working from high and low angles. A 2.36m-dot Tru-Finder OLED EVF is also featured for bright and clear eye-level monitoring. For greater shooting flexibility, dual SD memory card slots are now featured, and a larger NP-FZ100 battery is also employed to achieve up to approximately 710 shots per charge. Suiting the camera's use in trying conditions, the magnesium-alloy chassis and weather-sealing also render the a7 III dust- and moisture-resistant.

24.2MP Exmor R BSI CMOS Sensor and BIONZ X Image Processor

Featuring a back-illuminated design, the full-frame 24.2-megapixel Exmor R CMOS sensor works with the BIONZ X image processor to offer high-resolution stills and video while minimizing noise and improving speed. This sensor structure works with a gapless on-chip lens design and an anti-reflection coating to improve light collection and enhance detail. Also, the copper wiring layer dramatically improves data transmission speed for creating 14-bit, high-resolution stills with a native sensitivity range from ISO 100-51200, which can be further expanded to ISO 50-204800. Also, it enables internal UHD 4K video recording with a wide dynamic range using the full width of the full-frame sensor. The BIONZ X processor also works in conjunction with a high-speed front-end LSI to realize faster processing times along with the ability to capture an impressive 15-stop dynamic range at low sensitivity values.

The sensor and processor combination also avails fast continuous shooting at up to 10 fps at full resolution, for up to 177 consecutive frames, and with full-time AF/AE when working with either a mechanical shutter or an electronic shutter. If shooting in live view mode, a continuous shooting rate of up to 8 fps is also possible.

Fast Hybrid AF System

An evolved 4D FOCUS system now employs a combination of 693 phase-detection points, which cover approximately 93% of the frame, along with 425 contrast-detection areas for reliable and quick autofocus and subject tracking performance. This Fast Hybrid AF System now achieves twice the focusing speed and more reliable tracking compared to previous a7 models, as well as improved low-light focusing. The use of phase-detection points also enables the use of A-mount lenses via the optional LA-EA3 or LA-EA1 lens mount adapters with full continuous AF/AE tracking compatibility.

The apt focus system also lends itself to a variety of focusing functions for refined accuracy, including Lock-on AF, which maintains focus on moving subjects throughout the use of a configurable frame that is set over the desired moving subject, and Expand Flexible Spot, which employs neighboring focus points to retain focus on moving subjects even if the originally selected point loses focus. Additionally, Eye AF can be used to base focus on recognized subjects' eyes for portraits and is available in both AF-S and AF-C modes. Autofocus can also be used in conjunction with the Focus Magnifier function for critical focus when homing in on minute subject details. The rear touchscreen can also be used for Touch Focus control, and a Touchpad Focus Control mode lets you use the rear screen intuitively while keeping your eye to the viewfinder.

5-Axis SteadyShot INSIDE Image Stabilization

Packed into the robust a7 III is a 5-stop effective 5-axis SteadyShot INSIDE image stabilization system that compensates for five different types of camera shake encountered during handheld shooting of stills and video. This allows users to confidently use any lens, even adapted lenses, for critical imaging without encountering blur from camera shake.

For long focal lengths, the system will correct for pitch and yaw adjustments. Macro and high-magnification imagery, on the other hand, will benefit from the inclusion of horizontal and vertical shift compensation. All shooting styles will get usage out of the roll compensation. All 5 axes of stabilization will function at all times, even when used with third-party lenses and adapters or lenses with built-in optical stabilization.

UHD 4K Video Recording in XAVC S Format

Internal recording of UHD 4K movies is possible in multiple frame rates up to 30 fps and using 2.4x oversampling renders greater detail and full pixel readout is possible, that is void of pixel binning, for higher quality imagery with reduced moiré and aliasing. Full-frame 4K recording has also been dramatically improved for improved quality when working at mid to high sensitivities to permit full use of the entire sensor width. Full HD 1080p recording is also supported in frame rates up to 120 fps, and both resolutions utilize the 100 Mb/s XAVC S format contained within an MP4 wrapper with 4:2:0 sampling. The high-speed, 120 fps recording also enables 4x and 5x slow-motion movie recording with the frame rate set to either 30p or 24p. In addition to high-resolution internal recording, uncompressed HDMI output also enables the use of an optional external recorder for clean 4K recording with 4:2:2 sampling.

Affording extensive customizable color and gamma controls, the a7 III allows users to adjust the gamma, black level, knee, color level, and more. Also, users can use the same S-Log2 Gamma Curve that is found on high end Sony Cinema cameras that squeezes up to 1300% more dynamic range into the video signal then traditional REC709, for increased post-production flexibility. HLG (Hybrid Log-Gamma) support is also available, along with the BT.2020 color space, for recording within a wide color gamut and, in addition to S-Log2, S-Log3 is also available for producing an effective 14-stop dynamic range with increased grading control in the shadow to mid-tone regions of the image.

Body Design and Built-In Wi-Fi/Bluetooth

  • An XGA OLED Tru-Finder EVF is featured, and has a 2.36m-dot resolution and 0.78x magnification for bright, clear viewing in high detail. This viewfinder design also affords the use of autofocus in the Focus Magnifier mode as well as improved focusing peaking to benefit manual focus operation.
  • In addition to the EVF, a 3.0" 922k-dot rear LCD is also available, which has a touch panel design for intuitive operation and focusing control. The screen also tilts upward 107° and downward 41° to benefit working from high and low angles.
  • Magnesium-alloy chassis assures rigidity, durability, and stability while remaining lightweight. The lens mount has also been improved to better support heavy lenses and the grip rigidity has been improved for more comfortable hand-holding.
  • Weather-sealing has been employed to resist dust and moisture for reliable operation in harsh weather conditions.
  • Using the NP-FZ100 battery, the a7 III has improved battery life and is now rated for approximately 710 shots per charge.
  • Dual SD memory card slots allow for flexible file saving and handling, and can be configured to partition raw and JPEG files or can be used for overflow recording. One of the card slots is rated to support UHS-II memory cards.
  • A USB 3.0 Type-C port has been added, in addition to a micro-USB port, for faster, more reliable tethering support. The USB Type-C connection allows the camera to be charged from the host power source while connected.
  • Built-in Wi-Fi enables the a7 III to instantly share imagery to mobile devices for direct sharing online to social networking, via email, and to cloud storage sites. NFC (Near Field Communication) is also supported, which allows for one-touch connection between the camera and compatible mobile devices; no complex set-up is required. Once connected, the linked mobile device can also display a live view image on its screen and remotely control the camera's shutter.
  • Bluetooth connectivity allows for location data acquisition.

Other Camera Features

  • A Ratings function lets you assign star values, from 1-5, to images in-camera for faster editing and sorting at home during post-production.
  • An advanced 1200-zone evaluative exposure metering sensor delivers consistent and accurate results using multi-segment, center-weighted, or spot metering modes.
  • Highlight and Average metering modes helps avoid blown-out highlights and provide stable auto-exposure, respectively.
  • Anti-flicker shooting automatically recognizes and times the shutter action to minimize the flicker effect for more consistent results on still images.
  • Picture Effect modes: Posterization (Color), Posterization (B/W), Pop Color, Retro Photo, Partial Color (R/G/B/Y), High Contrast Monochrome, Toy Camera (Normal/Cool/Warm/Green/Magenta), and Soft High-Key.
  • Creative Style modes: Standard, Vivid, Neutral, Clear, Deep, Light, Portrait, Landscape, Sunset, Night Scene, Autumn leaves, Black & White, Sepia, Style Box (1-6), (Contrast (-3 to +3 steps), Saturation (-3 to +3 steps), Sharpness (-3 to +3 steps).
UPC: 027242910768

AquaTech Base II Housing Kit for Sony a7 III, a7R III & a9 Specs

Physical
Depth Rating33' / 10 m
Material of ConstructionBody: Polyurethane
Clips/Latches/Other Parts: Stainless Steel, Anodized Aluminum, Plastic
Lens PortCompatible with Prime Lenses up to 63 mm in Length
Dimensions7.5 x 6.8 x 5" / 19.0 x 17.1 x 12.7 cm
Weight4.6 lb / 2.1 kg
Packaging Info
Package Weight6.185 lb
Box Dimensions (LxWxH)13.2 x 10.4 x 6.1"

Sony Alpha a7 III Mirrorless Digital Camera (Body Only) Specs

Imaging
Lens MountSony E
Camera FormatFull-Frame (1x Crop Factor)
PixelsActual: 25.3 Megapixel
Effective: 24.2 Megapixel
Maximum Resolution6000 x 4000
Aspect Ratio3:2, 16:9
Sensor TypeCMOS
Sensor Size35.6 x 23.8 mm
Image File FormatJPEG, RAW
Bit Depth14-Bit
Image StabilizationSensor-Shift, 5-Axis
Exposure Control
ISO SensitivityAuto, 100 to 51200 (Extended: 50 to 204800)
Shutter Speed1/8000 to 30 Seconds
Bulb Mode
Metering MethodCenter-Weighted Average, Highlight Weighted, Multi-Zone, Spot
Exposure ModesAperture Priority, Auto, Manual, Program, Shutter Priority
Exposure Compensation-5 to +5 EV (1/3, 1/2 EV Steps)
Metering Range-3 to 20 EV
White BalanceAuto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
Continuous ShootingUp to 10 fps at 24.2 MP for up to 89 Exposures (Raw)
Up to 10 fps at 24.2 MP for up to 177 Exposures (JPEG)
Up to 8 fps at 24.2 MP
Up to 6 fps at 24.2 MP
Up to 3 fps at 24.2 MP
Self-Timer2/5/10-Second Delay
Video
Recording ModesXAVC S/H.264
UHD 4K (3840 x 2160) at 23.976p/25p/29.97p [60 to 100 Mb/s]
Full HD (1920 x 1080) at 100p/119.88p [60 to 100 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p [50 Mb/s]
Full HD (1920 x 1080) at 50p/59.94p [25 Mb/s]
Full HD (1920 x 1080) at 25p/29.97p [16 Mb/s]
AVCHD/H.264
Full HD (1920 x 1080) at 50i/59.94i [24 Mb/s]
Full HD (1920 x 1080) at 50i/59.94i [17 Mb/s]
External Recording Modes4:2:2 8-Bit
UHD 4K (3840 x 2160) at 24.00p/25p/29.97p
Full HD (1920 x 1080) at 24.00p/50i/50p/59.94i/59.94p
Recording LimitUp to 29 Minutes
Video EncodingNTSC/PAL
Audio RecordingBuilt-In Microphone (Stereo)
External Microphone Input
Audio File FormatAC3, Dolby Digital 2ch, Linear PCM (Stereo)
Focus
Focus TypeAuto and Manual Focus
Focus ModeAutomatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S)
Autofocus PointsPhase Detection: 693
Contrast Detection: 425
Autofocus Sensitivity-3 to +20 EV
Viewfinder and Monitor
Viewfinder TypeElectronic
Viewfinder Size0.5"
Viewfinder Resolution2,359,000 Dot
Viewfinder Eye Point23 mm
Viewfinder Coverage100%
Viewfinder MagnificationApprox. 0.78x
Diopter Adjustment-4 to +3
Monitor Size3"
Monitor Resolution921,600 Dot
Monitor TypeTilting Touchscreen LCD
Flash
Built-In FlashNo
Flash ModesAuto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync, Wireless
Maximum Sync Speed1/250 Second
Flash Compensation-3 to +3 EV (1/3, 1/2 EV Steps)
Dedicated Flash SystemTTL
External Flash ConnectionHot Shoe
Interface
Memory Card SlotSlot 1: SD/SDHC/SDXC (UHS-II)
Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
Connectivity3.5mm Headphone, 3.5mm Microphone, HDMI D (Micro), USB Type-C (USB 3.0)
WirelessWi-Fi
Bluetooth
GPSNo
Environmental
Operating Temperature32 to 104°F / 0 to 40°C
Physical
Battery1 x NP-FZ100 Rechargeable Lithium-Ion, 7.2 VDC, 2280 mAh
Dimensions (W x H x D)5 x 3.8 x 2.9" / 126.9 x 95.6 x 73.7 mm
Weight1.43 lb / 650 g
Packaging Info
Package Weight2.5 lb
Box Dimensions (LxWxH)8.1 x 6 x 5.4"
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