Sony Alpha a7R IIIA Full Frame Mirrorless Camera Body

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MFR #: 14464945

Brand: Sony


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Sony Alpha a7R IIIA Full Frame Mirrorless Camera Body

Proving that speed, resolution, and video capabilities can all coexist, the Alpha a7R IIIA Mirrorless Digital Camera from Sony is a versatile, high-performance camera characterized by not only its resolution, but by its multimedia versatility. Revolving around a full-frame 42.4MP Exmor R BSI CMOS sensor and updated BIONZ X image processor, the a7R IIIA affords an impressive 10 fps continuous shooting rate along with improved autofocus performance for faster, more reliable subject tracking along with wide frame coverage. This updated Fast Hybrid AF System employs a combination of 399 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 throughout the sensitivity range from ISO 100-32000, which can further be expanded to ISO 50-102400. Video recording capabilities have also been extended for enhanced quality when recording UHD 4K video with the full width of the full-frame sensor, or when using a Super35 area and 5K oversampling to minimize moiré and aliasing. Additionally, benefitting both stills and video operation, the a7R IIIA retains the 5-axis SteadyShot INSIDE sensor-shift image stabilization, which is now effective to minimize the appearance of camera shake by up to 5.5 stops.

In addition to imaging updates, the a7R IIIA also sports a revised body design, which includes a 3.69m-dot Tru-Finder OLED electronic viewfinder for bright, clear, and realistic eye-level monitoring. An updated rear 3.0" 2.36m-dot tilting touchscreen LCD is also available for intuitive settings control and to better support working from high and low angles. 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 530 shots per charge when using the viewfinder. Suiting the camera's use in trying conditions, the magnesium alloy chassis and extensive weather-sealing also render the a7R IIIA dust- and moisture-resistance.


  • 42MP Full-Frame Exmor R BSI CMOS Sensor
  • BIONZ X Image Processor & Front-End LSI
  • 399-Point AF System & 10 fps Shooting
  • UHD 4K30p Video with HLG & S-Log3 Gammas
  • 3.69m-Dot Tru-Finder OLED EVF
  • 3.0" 2.36m-Dot Tilting Touchscreen LCD
  • 5-Axis SteadyShot INSIDE Stabilization
  • ISO 102400 & Pixel Shift Multi Shooting
  • Built-In Wi-Fi/Bluetooth, Dual SD Slots
  • USB 3.2 Gen 1 Type-C Port & PC Sync Port


Imaging Lens Mount:
Sony E
Imaging Camera Format:
Full-Frame (1x Crop Factor)
Imaging Sensor Resolution:
Actual: 43.6 Megapixel | Effective: 42.4 Megapixel (7952 x 5304)
Imaging Aspect Ratio:
3:2, 16:9
Imaging Sensor Type:
Imaging Sensor Size:
35.9 x 24 mm
Imaging Image File Format:
Imaging Bit Depth:
Imaging Image Stabilization:
Sensor-Shift, 5-Axis
Exposure Control
Exposure Control ISO Sensitivity:
Auto, 100 to 32000 (Extended: 50 to 102400)
Exposure Control Shutter Speed:
  • 1/8000 to 30 Seconds
  • 1/8000 to 1/4 Second in Movie Mode
  • Bulb Mode
  • Exposure Control Metering Method:
    Center-Weighted Average, Highlight Weighted, Multi-Zone, Spot
    Exposure Control Exposure Modes:
    Aperture Priority, Auto, Manual, Program, Shutter Priority
    Exposure Control Exposure Compensation:
    -5 to +5 EV (1/3, 1/2 EV Steps)
    Exposure Control Metering Range:
    -3 to 20 EV
    Exposure Control White Balance:
  • Auto, Cloudy, Color Temperature, Custom, Daylight, Flash,
  • Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm
  • White), Incandescent, Shade, Underwater
  • Exposure Control Continuous Shooting:
  • Up to 10 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
  • Up to 8 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
  • Up to 6 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
  • Up to 3 fps at 42
  • Exposure Control Self-Timer:
    2/5/10-Second Delay
    Video Recording Modes:
  • XAVC S
  • UHD 4K (3840 x 2160) at 23.976p/25p/29.97p [60 to 100 Mb/s]
  • Full HD (1920 x 1080) at 23.976p/25p/29.97p/50p/59.94p
  • /100p/119.88p [100 Mb/s]
  • HD (1280 x 720) at 100p/119.88p [50 Mb/s]
  • Ful
  • Video External Recording Modes:
  • 4:2:2 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
  • Video Recording Limit:
    Up to 29 Minutes
    Video Video Encoding:
    Video Audio Recording:
    Built-In Microphone (Stereo) | External Microphone Input
    Video Audio File Format:
    AC3, Dolby Digital 2ch, Linear PCM (Stereo)
    Focus Focus Type:
    Auto and Manual Focus
    Focus Focus Mode:
    Automatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), | Manual Focus (M), Single-Servo AF (S)
    Focus Autofocus Points:
    Phase Detection: 399 | Contrast Detection: 425
    Focus Autofocus Sensitivity:
    -2 to +20 EV
    Viewfinder Type:
    Viewfinder Size:
    Viewfinder Resolution:
    3,686,400 Dot
    Viewfinder Eye Point:
    23 mm
    Viewfinder Coverage:
    Viewfinder Magnification:
    Approx. 0.78x
    Diopter Adjustment:
    -4 to +3
    Monitor Size:
    Monitor Resolution:
    2,359,296 Dot
    Monitor Display Type:
    Tilting Touchscreen LCD
    Flash Built-In Flash:
    Flash Flash Modes:
    Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, | Slow Sync, Wireless
    Flash Maximum Sync Speed:
    1/250 Second
    Flash Flash Compensation:
    -3 to +3 EV (1/3, 1/2 EV Steps)
    Flash Dedicated Flash System:
    Flash External Flash Connection:
    Hot Shoe, PC Terminal
    Interface Media/Memory Card Slot:
    Slot 1: SD/SDHC/SDXC (UHS-II) | Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
    Interface Connectivity:
    3.5mm Headphone, 3.5mm Microphone, HDMI D (Micro), USB | Type-C (USB 3.0), USB Micro-B (USB 2.0)
    Interface Wireless:
    Wi-Fi | Bluetooth
    Interface GPS:
    Operating Temperature:
    32 to 104°F / 0 to 40°C
    Physical Battery:
    1 x NP-FZ100 Rechargeable Lithium-Ion, 7.2 VDC, 2280 mAh | (Approx. 530 Shots)

    In The Box

  • Sony Alpha a7R IIIA Mirrorless Digital Camera (Body Only)
  • Sony NP-FZ100 Rechargeable Lithium-Ion Battery (2280mAh)
  • Sony BC-QZ1 Battery Charger
  • Cable Protector
  • Shoulder Strap
  • Sony ALC-B1EM Body Cap for E-Mount Cameras
  • Accessory Shoe Cap
  • Eyepiece Cup
  • USB Type-C Cable
  • Limited 1-Year Warranty
  • Customer Reviews