Head to head · specs cited · drawn to scale
OM System OM-5 vs Sony A7C II
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
- EVF resolution: the A7C II leads at 2,359,296 dots vs the OM-5's 2.360K dots.
- EVF magnification: the OM-5 leads at Max. 1.37x with a 50mm lens vs the A7C II's Approx. 0.70x (with 50 mm lens at infinity, -1 m-1).
- Battery life (CIPA): the A7C II leads at Approx. 530 shots (Viewfinder) / Approx. 560 shots (LCD monitor) (CIPA standard) vs the OM-5's 310 shots.
 OM-5 Micro Four Thirds |  A7C II Sony E | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | 4/3'' (Micro Four Thirds), 17.3 x 13.0mm | full frame |
| Lens mount | Micro Four Thirds | Sony E |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | 4/3'' Live MOS sensor | 35 mm full frame (35.9 x 23.9 mm), Exmor R CMOS sensor |
| Sensor size | 4/3'' (Micro Four Thirds), 17.3 x 13.0mm | full frame |
| Resolution (MP) | 20.4 Megapixels (effective); 21.8 Megapixels (full) | 33 |
| In-body stabilisation | Up to 7.5 EV steps (Sync IS); Up to 6.5 EV steps (Sensor shift) | 7.0 stops |
| ISO range | ISO LOW - 25600 | 100 |
| Autofocus & Speed | ||
| AF system | TTL phase difference detection system, contrast detection system | Fast Hybrid AF (phase-detection AF / contrast-detection AF), max 759 points (still images) |
| Subject detection | 121 points (all cross type); Eye Detect AF; predictive AF | Human, Animal, Bird, Insect, Car, Train, Airplane |
| Burst — mechanical | Approx. 10fps (H); 6fps (L) | 10 fps (Hi+) |
| Burst — electronic | Approx. 30fps (silent, H); Approx. 10fps (L) | —, not published |
| Video | ||
| Max video | 4096 x 2160 (C4K) / 24p; 3840 x 2160 (4K) / 30p | 4K 60p |
| Codecs / sampling | MOV (MPEG-4AVC/H.264) | XAVC S, XAVC S-I, XAVC HS |
| Recording limit | Up to card capacity | —, not published |
| Viewfinder & Screen | ||
| EVF resolution | 2.360K dots | 2,359,296 dots |
| EVF magnification | Max. 1.37x with a 50mm lens | Approx. 0.70x (with 50 mm lens at infinity, -1 m-1) |
| Rear screen | 3.0'' (3:2), 1037K dots, Vari-angle LCD - Touch Panel | 2.95-inch (3.0-type) wide type TFT, 1,036,800 dots, vari-angle (opening angle approx. 176°, rotation angle approx. 270°), touch panel |
| Body & Handling | ||
| Dimensions (W×H×D) | 125.3 × 85.2 × 49.7 mm | 124 × 71.1 × 63.4 mm |
| Weight (body) | 414 g | 514 g |
| Weather sealing | IP53 (operating temperature -10 - 40 C) | —, not published |
| Shutter durability | —, not published | —, not published |
| Power & Storage | ||
| Battery life (CIPA) | 310 shots | Approx. 530 shots (Viewfinder) / Approx. 560 shots (LCD monitor) (CIPA standard) |
| Battery | BLS-50 Lithium-Ion Battery | NP-FZ100 |
| Card slots | Single SD (UHS-II compatible) | 1x SD (UHS-I/II compliant) |
| Connectivity | ||
| USB | USB 2.0 High Speed | USB Type-C (SuperSpeed USB 5 Gbps / USB 3.2 compatible) |
| Wireless | Wi-Fi and Bluetooth present | Wi-Fi IEEE 802.11a/b/g/n/ac (2.4 GHz/5 GHz band); Bluetooth Ver. 4.2 (2.4 GHz band) |
| HDMI | Micro connector (Type D) | HDMI micro connector (Type-D) |
| Price | ||
| Launch price | —, not published | —, 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 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
“4/3'' Live MOS sensor, 20.4 Megapixels effective, 4:3 / 17.3 x 13.0mm; Sensor shift, Up to 7.5 EV steps Sync IS; TTL phase difference detection system, contrast detection system, 121 points; EVF 2.360K dots, Max. 1.37x with a 50mm lens; BLS-50 Lithium-Ion Battery, 310 shots”
“35 mm full frame (35.9 x 23.9 mm), Exmor R CMOS sensor. Number of pixels (effective): Still images approx. 33.0 megapixels max. Continuous drive speed (approx. max.): Hi+: 10 fps. Compensation effect: 7.0 stops (based on CIPA standard).”
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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