Sony Alpha A7R III Review
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Our editorial take on the Sony Alpha A7R III
The Sony Alpha A7R III arrived in late 2017 as a substantial upgrade to the A7R line, combining a 42.4-megapixel backside-illuminated full-frame sensor with meaningful ergonomic and performance improvements. It delivered 10 fps continuous shooting, a significantly improved battery (530 shots via EVF), dual SD card slots with UHS-II support on one, and 5-axis in-body stabilization rated at 5.5 stops. The 399 phase-detection points covering 68% of the frame, paired with Eye AF, made it a credible tool for action and portraiture, not just landscapes and studio work.
Reviewers praised its versatility. The A7R III handled high-resolution stills, fast-moving subjects, and 4K video with full-frame readout and 5K oversampling in Super 35 mode. Metering proved reliable and consistent, while the pixel-shift mode offered a roughly 170-megapixel composite option for static subjects. The camera's build quality, weather sealing, and refined ergonomics earned consistent approval. At $3,200, it sat at the premium end of the mirrorless market, but the feature set and image quality justified the price for pros and serious enthusiasts who needed resolution and speed in one body.
- 42.4MP BSI sensor with excellent image quality and 15 stops of dynamic range
- 10 fps continuous shooting with deep buffer (76 compressed RAW frames)
- 5.5-stop 5-axis in-body stabilization
- Reliable Fast Hybrid AF with 399 phase-detection points and Eye AF
- Dual SD card slots and improved battery life (530 shots via EVF)
- 8-bit 4:2:0 internal video recording only
- 4K recording limited to 30p with 29 min 50 sec time limit
Synthesized by Geared editors from aggregated expert reviews.
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Editorial reviews
The A7R III has no optical low pass filter, includes five-axis in-body image stabilization, shoots 4K video with full use of the 35mm sensor (while also ...
Sony's Alpha A7r Mark III is a highly capable camera that's equally at home shooting high resolution stills as it is handling fast action or ...
In our tests, the Sony a7r III did a great job when it comes to metering. It's more or less on par with Sunny 16 laws. But when a flash is ...
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About this product
42MP refresh.
Specs
- Battery
- NP-FZ100, 530 shots (EVF) or 650 shots (LCD)
- Weight Grams
- 657 g (body with battery and card)
- Dimensions Mm
- 126.9 x 95.6 x 73.7 mm
- Build Material
- Magnesium alloy
- Weather Sealing
- Yes (dust and moisture resistant)
- Bit Depth
- 8-bit 4:2:0
- Raw Video
- External via HDMI (4:2:2 uncompressed)
- Log Profiles
- S-Log2, S-Log3, HLG (Hybrid Log-Gamma)
- Internal Codecs
- XAVC S
- Max Frame Rate 4k
- 4K 30p
- Max Frame Rate Hd
- 1080/120p
- Max Video Bitrate
- 100 Mbps
- Max Recording Time
- 29 min 50 sec
- Max Video Resolution
- 4K UHD (3840x2160)
- Focus Peaking
- Yes
- Proxy Recording
- Yes
- Pc Sync Terminal
- Yes
- Shutter Durability
- 500,000 actuations
- Dynamic Range Stills
- 15 stops (at low ISO)
- Anti Flicker Shooting
- Yes
- Viewfinder Frame Rates
- 120 fps or 100 fps
- Super35 4k Oversampling
- 5K oversampling
- Phase Detection Coverage
- 68% of frame
- Pixel Shift Multi Shooting
- Yes, 4 shots, approx. 169.6 MP composite
- Buffer Depth Compressed Raw
- 76 frames
- Sensor Size
- Full-frame (35mm)
- Sensor Type
- Exmor R BSI CMOS
- Image Processor
- BIONZ X
- Low Pass Filter
- No
- Effective Megapixels
- 42.4 MP
- Release Date
- November 2017
- Announced Date
- October 2017
- Launch Price Usd
- $3,198
- Dual Native Iso
- No
- Iso Range Video
- ISO 100-32000 (expandable to ISO 50-102400)
- Iso Range Stills
- ISO 100-32000 (expandable to ISO 50-102400)
- Continuous Shooting
- 10 fps (Hi+), 8 fps (Hi), electronic or mechanical shutter
- Shutter Speed Electronic
- 1/8000 to 30 s
- Shutter Speed Mechanical
- 1/8000 to 30 s, Bulb
- Viewfinder
- OLED EVF, 3.69 million dots, Quad-VGA
- Rear Screen
- 3.0-inch LCD, 1.44 million dots, tilting (107° up, 41° down)
- Touchscreen
- Yes
- Lens Mount
- Sony E
- Crop Factor
- 1.0x
- Usb
- USB 3.1 Gen 1 Type-C, Micro USB
- Hdmi
- HDMI (Type D)
- Audio Io
- 3.5mm microphone input, 3.5mm headphone output
- Wireless
- Wi-Fi, Bluetooth, NFC
- Card Slots
- 2x SD (1x UHS-II compatible)
- Ibis
- 5-axis, 5.5 stops
- Af Points
- 399 phase-detection, 425 contrast-detection
- Af System
- Fast Hybrid AF (phase-detection and contrast-detection)
- Af Low Light
- -3 EV
- Subject Detection
- Eye AF (human)
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