Sony Alpha a7R III

The Sony Alpha 7R III is Sony’s latest high-resolution, full-frame mirrorless camera. It offers impressive all-round specifications, with a 42.4MP sensor, 10fps continuous shooting, a hybrid AF system that employs 399 phase-detection points covering approximately 68% of the frame, and 4K video recording. It costs $3200 body-only.

It’s now four years since Sony unveiled the world’s first full-frame mirrorless cameras, in the shape of the 24MP A7 and 36MP A7R. A year-and-a-half later, we saw the updated A7R II, with a groundbreaking 42.4MP sensor, built-in 5-axis image stabilisation, and a much-improved body design. Now it’s time for round three, in the form of the Alpha 7R III.

Sony has clearly decided to stick to what it knows best and kept to a very familiar template, with a compact, SLR-styled body and central electronic viewfinder. But it’s taken the A7R II design and added many of the best features it debuted on the Alpha 9 earlier this year, with the aim of addressing those aforementioned weaknesses. The result is a very impressive camera with a remarkable combination of resolution, shooting speed and high-ISO image quality.

Sony has employed essentially the same excellent 42.4MP back-illuminated full-frame sensor as the A7R II, with on-chip phase detection for autofocus. However, it’s now been teamed up with the latest Bionx X processor and front-end LSI, bringing a slightly extended standard sensitivity range of ISO 100-32,000, expandable to ISO 50-102,400. The camera is said to offer fully 15 stops of dynamic range at ISO 100, which can be recorded into its 14-bit RAW files even during continuous or silent shooting (where the A7R II fell back to 12-bit raw).

Sony Alpha a7R III Specifications

Price
MSRP$3199 (body only)
Body type
Body typeSLR-style mirrorless
Sensor
Max resolution7952 x 5304
Image ratio w:h3:2, 16:9
Effective pixels42 megapixels
Sensor photo detectors44 megapixels
Sensor sizeFull frame (35.9 x 24 mm)
Sensor typeBSI-CMOS
ProcessorBionz X
Image
ISOAuto, 100-32000 (expands to 50-102400)
Boosted ISO (minimum)50
Boosted ISO (maximum)102400
White balance presets10
Custom white balanceYes
Image stabilizationSensor-shift
Image stabilization notes5-axis
CIPA image stabilization rating5.5 stop(s)
Uncompressed formatRAW
JPEG quality levelsExtra fine, fine, standard
Optics & Focus
Autofocus
  • Contrast Detect (sensor)
  • Phase Detect
  • Multi-area
  • Center
  • Selective single-point
  • Tracking
  • Single
  • Continuous
  • Touch
  • Face Detection
  • Live View
Digital zoomYes
Manual focusYes
Number of focus points399
Lens mountSony E Mounts
Focal length multiplier1×
Screen / viewfinder
Articulated LCDTilting
Screen size3
Screen dots1,440,000
Touch screenYes
Screen typeTFT LCD
Live viewYes
Viewfinder typeElectronic
Viewfinder coverage100%
Viewfinder magnification0.78×
Viewfinder resolution3,686,400
Photography features
Minimum shutter speed30 sec
Maximum shutter speed1/8000 sec
Aperture priorityYes
Shutter priorityYes
Manual exposure modeYes
Subject / scene modesYes
Built-in flashNo
External flashYes (via hot shoe or flash sync port)
Flash modesOff, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
Continuous drive10.0 fps
Self-timerYes (2 or 10 sec; continuous (3 or 5 exposures))
Metering modes
  • Multi
  • Center-weighted
  • Spot
Exposure compensation±5 (at 1/3 EV, 1/2 EV steps)
AE Bracketing±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)
WB BracketingYes
Videography features
FormatMPEG-4, AVCHD, XAVC S
Modes
  • 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 3840 x 2160 @ 30p / 60 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 120p / 60 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 60p / 25 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 60i / 24 Mbps, AVCHD, MTS, H.264, AAC
  • 1920 x 1080 @ 60i / 17 Mbps, AVCHD, MTS, H.264, AAC
  • 1920 x 1080 @ 30p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 30p / 16 Mbps, XAVC S, MP4, H.264, Linear PCM
  • 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
MicrophoneStereo
SpeakerMono
Storage
Storage typesTwo SD/SDHC/SDXC slots (UHS-II support on one)
Connectivity
USBUSB 3.1 Gen 1 (5 GBit/sec)
HDMIYes (micro HDMI)
Microphone portYes
Headphone portYes
WirelessBuilt-In
Wireless notes802.11b/g/n + NFC + Bluetooth
Remote controlYes (wired, wireless, smartphone)
Physical
Environmentally sealedYes
BatteryBattery Pack
Battery descriptionNP-FZ100 lithium-ion battery and charger
Battery Life (CIPA)650
Weight (inc. batteries)657 g (1.45 lb / 23.17 oz)
Dimensions127 x 96 x 74 mm (5 x 3.78 x 2.91)
Other features
Orientation sensorYes
Timelapse recordingNo
GPSNone

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