Head to head · specs cited · drawn to scale
Sony A7 IV 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 IV's 33.
- Format: A7 IV has 35 mm full frame (35.9 x 23.9 mm); A7R III has Full-frame.
- Sensor type: A7 IV has Full-frame back-illuminated Exmor R CMOS sensor; A7R III has 35mm full frame (35.9x24.0mm), Exmor R CMOS sensor.
 A7 IV Sony E |  A7R III Sony E | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | 35 mm full frame (35.9 x 23.9 mm) | Full-frame |
| Lens mount | Sony E | Sony E |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | Full-frame back-illuminated Exmor R CMOS sensor | 35mm full frame (35.9x24.0mm), Exmor R CMOS sensor |
| Sensor size | 35 mm full frame (35.9 x 23.9 mm) | Full-frame |
| Resolution (MP) | 33 | 42.4 |
| In-body stabilisation | 5.5 stops | 5.5 |
| ISO range | ISO 100 (stills: ISO 100-51200, expandable to ISO 50-204800; movies: ISO 100-51200 equivalent, expandable to ISO 100-102400) | 100 |
| Autofocus & Speed | ||
| AF system | Fast Hybrid AF (phase-detection AF / contrast-detection AF), 759 phase-detection points (35 mm full frame) | Fast Hybrid AF (phase-detection AF/contrast-detection AF) |
| Subject detection | Human (Right/Left Eye Select), Animal (Right/Left Eye Select), Bird | 35mm full frame: 399 points (phase-detection AF) / 425 points (contrast-detection AF); Eye AF (Human/Animal) |
| Burst — mechanical | 10 fps (Hi+ continuous drive; shutter type not distinguished on spec page) | 10 |
| Burst — electronic | —, not published | —, not published |
| Video | ||
| Max video | 4K 60p (Super 35mm mode only; 4K 24p/30p available in full-frame mode) | 4K (3840 x 2160) up to 30p |
| Codecs / sampling | XAVC S-I, XAVC S, XAVC HS (MPEG-4 AVC/H.264; XAVC HS uses MPEG-H HEVC/H.265) | XAVC S, AVCHD |
| Recording limit | —, not published | —, not published |
| Viewfinder & Screen | ||
| EVF resolution | 3,686,400 dots (0.5-type Quad-VGA OLED) | 3,686,400 dots |
| EVF magnification | Approx. 0.78x (with 50 mm lens at infinity, -1m-1) | approx. 0.78x (with 50mm lens at infinity, -1m-1) |
| Rear screen | 2.95 inch (3.0-type) TFT, 1,036,800 dots, vari-angle (opening angle approx. 176 deg, rotation angle approx. 270 deg), touch panel | 7.5cm (3.0-type) type TFT, 1,440,000 dots |
| Body & Handling | ||
| Dimensions (W×H×D) | 131.3 × 96.4 × 79.8 mm | 126.9 × 95.6 × 73.7 mm |
| Weight (body) | 658 g | 657 g |
| Weather sealing | not published (spec page states only: 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) | —, not published | Approx. 530 shots (Viewfinder) / approx. 650 shots (LCD monitor) |
| Battery | NP-FZ100 | NP-FZ100 |
| Card slots | 2 slots: SLOT1 multi slot for SD (UHS-I/II) / CFexpress Type A card, SLOT2 SD (UHS-I/II) | 2 (SLOT1: SD UHS-I/II compliant; SLOT2: Multi slot for Memory Stick Duo/SD UHS-I compliant) |
| Connectivity | ||
| USB | USB Type-C (USB-A to USB-C cable supplied is USB 3.2; USB Power Delivery compatible for charging/power), plus Multi/Micro USB terminal | USB Type-C (SuperSpeed USB 3.1 Gen 1 compatible), Multi/Micro USB Terminal |
| Wireless | Wi-Fi IEEE 802.11a/b/g/n/ac (2.4 GHz/5 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 | —, not published | HDMI micro connector (Type-D) |
| Price | ||
| Launch price | $2,499.99 (US, body only — listed as "Original Price" on Sony's official 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 Retrospective 4 V2.0 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
“Sensor Type: 35 mm full frame (35.9 x 23.9 mm), Exmor R CMOS sensor. Number Of Pixels (Effective): Approx. 33.0 megapixels. Focus Point: 35 mm full frame: 759 points (phase-detection AF). Continuous Drive Speed (approx. max.): Hi+: 10 fps, Hi: 8 fps, Mid: 6 fps, Lo: 3 fps.”
“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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