Sony Alpha a7R IIIA Mirrorless Digital Camera (Body Only)

Model: ILCE7RM3A/B

Sony Warranty - USA Version
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MSRP: $2,199.99 ?


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Video Encoding NTSC/PAL
Audio Recording Built-In Microphone (Stereo)
External Microphone Input
Audio File Format AC3, Dolby Digital 2ch, Linear PCM (Stereo)
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]
Full HD (1920 x 1080) at 50p/59.94p [28 Mb/s]
Full HD (1920 x 1080) at 23.976p/25p/50i/59.94i [17 to 24 Mb/s]
Full HD (1920 x 1080) at 50p/59.94p [28 Mb/s]
Full HD (1920 x 1080) at 25p/29.97p [16 Mb/s]
HD (1280 x 720) at 25p/29.97p [6 Mb/s]
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
Recording Limit Up to 29 Minutes


Weight 1.45 lb / 657 g
Dimensions (W x H x D) 5 x 3.76 x 2.9" / 126.9 x 95.6 x 73.7 mm
Battery 1 x NP-FZ100 Rechargeable Lithium-Ion, 7.2 VDC, 2280 mAh (Approx. 530 Shots)

Packaging Info

Box Dimensions (LxWxH) 9.7 x 6.1 x 5.7"
Package Weight 3 lb


Connectivity 3.5mm Headphone, 3.5mm Microphone, HDMI D (Micro), USB Type-C (USB 3.0), USB Micro-B (USB 2.0)
Media/Memory Card Slot Slot 1: SD/SDHC/SDXC (UHS-II)
Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
Wireless Wi-Fi


Lens Mount Sony E
Camera Format Full-Frame (1x Crop Factor)
Sensor Resolution Actual: 43.6 Megapixel
Effective: 42.4 Megapixel (7952 x 5304)
Aspect Ratio 3:2, 16:9
Sensor Type CMOS
Sensor Size 35.9 x 24 mm
Image File Format JPEG, Raw
Bit Depth 14-Bit
Image Stabilization Sensor-Shift, 5-Axis


Focus Mode Automatic (A), Continuous-Servo AF (C), Direct Manual Focus (DMF), Manual Focus (M), Single-Servo AF (S)
Focus Type Auto and Manual Focus
Autofocus Points Phase Detection: 399
Contrast Detection: 425
Autofocus Sensitivity -2 to +20 EV
Viewfinder Type Electronic
Viewfinder Size 0.5"
Viewfinder Resolution 3,686,400 Dot
Viewfinder Eye Point 23 mm
Viewfinder Coverage 100%
Viewfinder Magnification Approx. 0.78x
Diopter Adjustment -4 to +3
Size 3.0"
Resolution 2,359,296 Dot
Display Type Tilting Touchscreen LCD


Flash Modes Auto, Fill Flash, Hi-Speed Sync, Off, Rear Sync, Red-Eye Reduction, Slow Sync, Wireless
Built-In Flash No
Maximum Sync Speed 1/250 Second
Flash Compensation -3 to +3 EV (1/3, 1/2 EV Steps)
Dedicated Flash System TTL
External Flash Connection Hot Shoe, PC Terminal

Exposure Control

ISO Sensitivity Auto, 100 to 32000 (Extended: 50 to 102400)
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 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
White Balance Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
Metering Range -3 to 20 EV
Self-Timer 2/5/10-Second Delay
Exposure Compensation -5 to +5 EV (1/3, 1/2 EV Steps)
Exposure Modes Aperture Priority, Auto, Manual, Program, Shutter Priority
Metering Method Center-Weighted Average, Highlight Weighted, Multi-Zone, Spot
Shutter Speed 1/8000 to 30 Seconds
1/8000 to 1/4 Second in Movie Mode
Bulb Mode


Operating Temperature 32 to 104°F / 0 to 40°C
User Reviews
22 August 2023

Great piece of kit that totally improves on the A7RII that I have.

11 August 2023

I have recently purchased this camera with the Sony 20mm 1.8 and have had a couple of trips to The Peak District, England to put the camera and lens through its paces. Varied landscape work, lee filters and I cannot find the words to really describe my joy with the quality of build and the superb...

18 July 2023

Since getting this camera, I have found huge improvement to the quality of my photographs. So mush easier to resize and edit shots, allowing for high quality outcomes, due to the high number of Pixels. I can, when needed, zoom in and crop without getting pixelisation. Fabulous

5 April 2023

I’ve used and owned a canon 760d, 7dmk2, 5d3, 5d4 and Nikon d800s and a d810. This camera somehow picks all the best bits from all my previous cameras and puts it into a robust mirror less format and then throws another load of MP to boot. Simply brilliant

22 February 2023

This is an upgrade from my original A7 which was the best digital camera I’ve ever owned. The A7rm3 is a step ahead with a proper facility to stream live content to a PC or phone. Huge benefit with my astrophotography. Love it.

10 January 2023

Upgraded from a7rii and really loving the quick and swift operations

7 January 2023

Absolutely delighted with my purchase, build quality is good, nice and light.. The sharpness in the image is unreal.

21 September 2022

Using for about few months mainly for landscape and wildlife

5 September 2022

To say this camera is impressive is a understatement the image quality and resolution is fantastic

30 August 2022

Bought this two years ago and love the build quality, light weight, mirror-less, professional feeling camera recommend this package to every photograph I meet. Love the grab and go aspect moving away from D5 and white lenses.

Product Highlights
  • 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
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
Still Have Questions?
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