Head to head · specs cited · drawn to scale
Sony A7 III vs Sony A7R IV
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 IV leads at 61.0 vs the A7 III's 24.2.
- EVF resolution: the A7R IV leads at 5,760,000 dots (1.3 cm (0.5 type) electronic viewfinder, UXGA OLED) 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 IV's Approx. 530 shots (Viewfinder) / approx. 670 shots (LCD monitor) (CIPA standard).
 A7 III Sony E |  A7R IV Sony E | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | full frame | 35 mm full frame (35.7×23.8mm) |
| 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 | Exmor R CMOS sensor |
| Sensor size | full frame | 35 mm full frame (35.7×23.8mm) |
| Resolution (MP) | 24.2 | 61.0 |
| In-body stabilisation | 5.0 stops | 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.); Image Sensor-Shift mechanism with 5-axis compensation |
| ISO range | ISO 100-51200 (stills) | Still images: ISO 100-32000 (ISO numbers up from ISO 50 to ISO 102400 can be set as expanded ISO range) |
| 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); 35 mm full frame: 567 points (phase-detection) / 425 points (contrast-detection) |
| Subject detection | Human eye (Eye AF) | Lock-on AF [Still] Human (Right/Left Eye Select)/Animal, [Movie] Human (Right/Left Eye Select); Face Detection (max. 8 faces) |
| Burst — mechanical | 10 fps (Hi+) | Continuous shooting: Hi+: max. 10 fps, Hi: max. 8 fps, Mid: max. 6 fps, Lo: max. 3 fps |
| Burst — electronic | —, not published | —, not published |
| Video | ||
| Max video | 4K 30p (3840 x 2160, XAVC S, 100 Mbps) | XAVC S 4K: 3840 x 2160 (30p, 100 M), 3840 x 2160 (24p, 100 M) |
| Codecs / sampling | XAVC S, AVCHD (MPEG-4 AVC/H.264) | XAVC S: MPEG-4 AVC/H.264, AVCHD: MPEG-4 AVC/H.264 |
| Recording limit | Approx. 29 minutes (continuous movie recording limit) | —, not published |
| Viewfinder & Screen | ||
| EVF resolution | 2,359,296 dots | 5,760,000 dots (1.3 cm (0.5 type) electronic viewfinder, UXGA OLED) |
| EVF magnification | approx. 0.78x | Approx. 0.78 x (with 50 mm lens at infinity, -1m) |
| 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 | 2.95 inch (3.0-type) wide type TFT, 1,440,000 dots, tilt up by approx. 107 degrees / down by approx. 41 degrees, Touch Panel: Yes |
| Body & Handling | ||
| Dimensions (W×H×D) | 126.9 × 95.6 × 73.7 mm | 128.9 × 96.4 × 77.5 mm |
| Weight (body) | 650 g | 665 g |
| Weather sealing | Anti-Dust System: Charge protection coating on optical filter and image sensor shift mechanism | —, not published |
| 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. 670 shots (LCD monitor) (CIPA standard) |
| 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) | Dual: SLOT1 SD (UHS-I/II compliant), SLOT2 SD (UHS-I/II compliant) |
| Connectivity | ||
| USB | USB Type-C Terminal (SuperSpeed USB (USB 3.1 Gen 1) compatible); Multi/Micro USB Terminal | Multi/Micro USB Terminal and USB Type-C Terminal (USB Power supply available on both) |
| 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 802.11a/b/g/n/ac (2.4 GHz / 5 GHz band); Bluetooth Standard Ver. 4.1 (2.4 GHz band); NFC (Type 3 Tag) |
| 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)”
“Sensor Type 35 mm full frame (35.7×23.8mm), Exmor R CMOS sensor ... Number Of Pixels (Effective) Approx. 61.0 megapixels ... Focus Point 35 mm full frame: 567 points (phase-detection AF) ... Compensation Effect 5.5 stops (based on CIPA standard...) ... Continuous shooting: Hi+: max. 10 fps ... Number of Dots 5,760,000 dots ... Supplied Battery One rechargeable battery pack NP-FZ100”
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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