Head to head · specs cited · drawn to scale
Sigma fp vs Sony A7 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
- Battery life (CIPA): the A7 III leads at Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) (CIPA standard) vs the fp's 280 still images; 70 minutes continuous.
- Weight (body): the fp leads at 422 g vs the A7 III's 650 g.
- Resolution (MP): the fp leads at 24.6 vs the A7 III's 24.2.
 fp Leica L |  A7 III Sony E | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | 35 mm full-frame (35.9 mm x 23.9 mm) | full frame |
| Lens mount | Leica L | Sony E |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | Back-illuminated CMOS sensor (Bayer) | 35 mm full frame (35.6 × 23.8 mm), Exmor R® CMOS sensor |
| Sensor size | 35 mm full-frame (35.9 mm x 23.9 mm) | full frame |
| Resolution (MP) | 24.6 | 24.2 |
| In-body stabilisation | none | 5.0 stops |
| ISO range | 100 | ISO 100-51200 (stills) |
| Autofocus & Speed | ||
| AF system | Contrast detection system | 693-point phase-detection AF (35 mm full frame); Fast Hybrid AF (phase-detection AF/contrast-detection AF) |
| Subject detection | 49-point selection mode, Free Move mode, Face/Eye Detection AF mode, Tracking AF mode | Human eye (Eye AF) |
| Burst — mechanical | —, not published | 10 fps (Hi+) |
| Burst — electronic | High Speed approx. 18 fps; Medium approx. 5 fps; Low approx. 3 fps | —, not published |
| Video | ||
| Max video | 3,840 x 2,160 (UHD 4K) / 23.98p, 24p, 25p, 29.97p | 4K 30p (3840 x 2160, XAVC S, 100 Mbps) |
| Codecs / sampling | CinemaDNG (8 bit, 10 bit, 12 bit) / MOV: H.264 | XAVC S, AVCHD (MPEG-4 AVC/H.264) |
| Recording limit | —, not published | Approx. 29 minutes (continuous movie recording limit) |
| Viewfinder & Screen | ||
| EVF resolution | —, not published | 2,359,296 dots |
| EVF magnification | —, not published | approx. 0.78x |
| Rear screen | 3.15 type, Approx. 2.1M dots, TFT color LCD touchscreen | 2.95 inch (3.0-type) wide type TFT, 921,600 dots, tilt up approx. 107 degrees / down approx. 41 degrees, touch panel |
| Body & Handling | ||
| Dimensions (W×H×D) | 112.6 × 69.9 × 45.3 mm | 126.9 × 95.6 × 73.7 mm |
| Weight (body) | 422 g | 650 g |
| Weather sealing | Dust and Splash Resistant Structure (42 points); not waterproof | Anti-Dust System: Charge protection coating on optical filter and image sensor shift mechanism |
| Shutter durability | not published (electronic shutter, no mechanical shutter) | —, not published |
| Power & Storage | ||
| Battery life (CIPA) | 280 still images; 70 minutes continuous | Approx. 610 shots (Viewfinder) / approx. 710 shots (LCD monitor) (CIPA standard) |
| Battery | Li-ion BP-51 | NP-FZ100 |
| Card slots | SD, SDHC, SDXC (UHS-II); Portable SSD via USB | 2 slots: SLOT1 SD (UHS-I/II compliant); SLOT2 Multi slot for Memory Stick Duo/SD (UHS-I compliant) |
| Connectivity | ||
| USB | USB 3.1 GEN1 Type-C | USB Type-C Terminal (SuperSpeed USB (USB 3.1 Gen 1) compatible); Multi/Micro USB Terminal |
| Wireless | —, not published | Wi-Fi Compatible, IEEE 802.11b/g/n (2.4 GHz band); Bluetooth Standard Ver. 4.1 (2.4 GHz band) |
| HDMI | Type D (Ver. 1.4) | HDMI micro connector (Type-D) |
| Price | ||
| Launch price | —, not published | $1,999.99 (body only, USD; listed as "Original Price" on electronics.sony.com product page) |
| 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 20 V2 Fits body only · 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
“35 mm full-frame (35.9 mm x 23.9 mm) Back-illuminated CMOS sensor; Approx. 24.6 MP effective / 25.3 MP total; Dust and Splash Resistant Structure (this construction allows the camera to be used in light rain, it is not the same as being waterproof)”
“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)”
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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