Head to head · specs cited · drawn to scale
Sony A7 III vs Sony A7R III
Every spec below is quoted from the makers' official pages — where a figure isn't published we say so rather than guess. Sizes are drawn at true relative scale from published dimensions, and the bag-fit row is computed against our measured bag catalog.
The 3 biggest published differences
- Resolution (MP): the A7R III leads at 42.4 vs the A7 III's 24.2.
- EVF resolution: the A7R III leads at 3,686,400 dots vs the A7 III's 2,359,296 dots.
- Battery life (CIPA): the A7 III leads at Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) (CIPA standard) vs the A7R III's Approx. 530 shots (Viewfinder) / approx. 650 shots (LCD monitor).
 A7 III Sony E |  A7R III Sony E | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | full frame | Full-frame |
| Lens mount | Sony E | Sony E |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | 35 mm full frame (35.6 × 23.8 mm), Exmor R® CMOS sensor | 35mm full frame (35.9x24.0mm), Exmor R CMOS sensor |
| Sensor size | full frame | Full-frame |
| Resolution (MP) | 24.2 | 42.4 |
| In-body stabilisation | 5.0 stops | 5.5 |
| ISO range | ISO 100-51200 (stills) | 100 |
| Autofocus & Speed | ||
| AF system | 693-point phase-detection AF (35 mm full frame); Fast Hybrid AF (phase-detection AF/contrast-detection AF) | Fast Hybrid AF (phase-detection AF/contrast-detection AF) |
| Subject detection | Human eye (Eye AF) | 35mm full frame: 399 points (phase-detection AF) / 425 points (contrast-detection AF); Eye AF (Human/Animal) |
| Burst — mechanical | 10 fps (Hi+) | 10 |
| Burst — electronic | —, not published | —, not published |
| Video | ||
| Max video | 4K 30p (3840 x 2160, XAVC S, 100 Mbps) | 4K (3840 x 2160) up to 30p |
| Codecs / sampling | XAVC S, AVCHD (MPEG-4 AVC/H.264) | XAVC S, AVCHD |
| Recording limit | Approx. 29 minutes (continuous movie recording limit) | —, not published |
| Viewfinder & Screen | ||
| EVF resolution | 2,359,296 dots | 3,686,400 dots |
| EVF magnification | approx. 0.78x | approx. 0.78x (with 50mm lens at infinity, -1m-1) |
| Rear screen | 2.95 inch (3.0-type) wide type TFT, 921,600 dots, tilt up approx. 107 degrees / down approx. 41 degrees, touch panel | 7.5cm (3.0-type) type TFT, 1,440,000 dots |
| Body & Handling | ||
| Dimensions (W×H×D) | 126.9 × 95.6 × 73.7 mm | 126.9 × 95.6 × 73.7 mm |
| Weight (body) | 650 g | 657 g |
| Weather sealing | Anti-Dust System: Charge protection coating on optical filter and image sensor shift mechanism | Sealing is provided throughout the body to minimise entry of dust and moisture (not guaranteed 100% dust and moisture proof) |
| Shutter durability | —, not published | —, not published |
| Power & Storage | ||
| Battery life (CIPA) | Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) (CIPA standard) | Approx. 530 shots (Viewfinder) / approx. 650 shots (LCD monitor) |
| Battery | NP-FZ100 | NP-FZ100 |
| Card slots | 2 slots: SLOT1 SD (UHS-I/II compliant); SLOT2 Multi slot for Memory Stick Duo/SD (UHS-I compliant) | 2 (SLOT1: SD UHS-I/II compliant; SLOT2: Multi slot for Memory Stick Duo/SD UHS-I compliant) |
| Connectivity | ||
| USB | USB Type-C Terminal (SuperSpeed USB (USB 3.1 Gen 1) compatible); Multi/Micro USB Terminal | USB Type-C (SuperSpeed USB 3.1 Gen 1 compatible), Multi/Micro USB Terminal |
| Wireless | Wi-Fi Compatible, IEEE 802.11b/g/n (2.4 GHz band); Bluetooth Standard Ver. 4.1 (2.4 GHz band) | Wi-Fi IEEE 802.11b/g/n (2.4GHz band), Bluetooth Standard Ver. 4.1 (2.4GHz band) |
| HDMI | HDMI micro connector (Type-D) | HDMI micro connector (Type-D) |
| Price | ||
| Launch price | $1,999.99 (body only, USD; listed as "Original Price" on electronics.sony.com product page) | —, not published |
| Size, to scale | ||
Front view, drawn at the same scale from each maker's published W×H (mm). | ||
| Smallest bag that fits | ||
| Body + standard zoom | Think Tank Mirrorless Mover 25 V2 Fits with 24-105 f/4 · View at B&H Photo Video | Think Tank Mirrorless Mover 25 V2 Fits with 24-105 f/4 · View at B&H Photo Video |
Sources
“Compensation Effect 5.0 stops (based on CIPA standard. Pitch/yaw shake only. With Planar T* FE 50mm F1.4 ZA lens mounted. Long exposure NR off.) TYPE Image Sensor-Shift mechanism with 5-axis compensation (compensation depends on lens specifications)”
“Number Of Pixels (Effective): Approx. 42.4 megapixels. Focus Point: 35mm full frame: 399 points (phase-detection AF)... / 425 points (contrast-detection AF). Continuous Drive Speed (approx. max.): Continuous shooting: Hi+: max. 10 fps. Compensation Effect: 5.5 stops (based on CIPA standard. Pitch/yaw shake only. With Planar T* FE 50mm F1.4 ZA lens mounted. Long exposure NR off.)”
Spec values are the manufacturers' published figures, compared factually — we don't rank cameras. Fit verdicts are planning estimates from published interior dimensions, not guarantees. See methodology.
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