OM-1vs A7C II
GearScore™ Verdict — Which should you buy?
Wildlife, Sport, Outdoor — OM-1 (2022): OM System's statement camera — class-leading weather sealing and the best IBIS in the business.
Full-Frame Hybrid — A7C II (2023): Full-frame AI autofocus in the most compact body available — the best camera under £1,500 for hybrid shooters.
Who should buy what
OM-1 (2022)
- Wildlife and bird photographers who need fast burst and pro weather sealing
- Outdoor photographers who work in challenging conditions
A7C II (2023)
- Travel photographers who want full-frame quality in the most compact body
- Hybrid shooters who need full-frame video and IBIS in a small package
- A7C owners looking for a significant AF and video upgrade
- Portrait and wedding photographers who want a discreet full-frame backup
Quick take: The a7c ii has the highest resolution at 33mp; the om-1 is the most affordable; only the om-1 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-1 (2022) | A7C II (2023) |
|---|---|---|
| Price | £1,299 | £1,499 |
| Sensor | Micro Four Thirds Live MOS stacked BSI | 33MP Full-frame Exmor R BSI CMOS |
| Resolution | 20.4MP | 33.0MP |
| Video | 4K 60fps 10-bit | 4K/60p oversampled, S-Log3, 10-bit internal |
| Autofocus | 1053-point cross-type phase-detect, AI subject recognition | 759-point phase-detect, AI subject recognition |
| Stabilisation | 5-axis IBIS, 7.0 stops (8 stops with sync IS) | 5-axis IBIS, 7.0 stops |
| Burst Rate | 10fps mechanical, 50fps electronic, 120fps Pro Capture | 10fps mechanical, 30fps electronic |
| Battery Life | 520 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 599g (body only) | 514g body only |
| Dimensions | 134.8 × 91.6 × 72.7mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF 0.83× 5.76M-dot | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen, 1.62M-dot | 3.0" vari-angle touchscreen |
| Mount | Micro Four Thirds | Sony FE (full-frame E-mount) |
| Memory Cards | 2× SD UHS-II / CFexpress Type B | Dual slots: SD UHS-II + CFexpress Type A |
| Connectivity | Wi-Fi 5GHz, Bluetooth 5.0, USB-C 3.1, HDMI, 3.5mm mic/headphone | USB-C (3.2), Bluetooth, Wi-Fi |
Suitability by genre
| Genre | OM-1 | A7C II |
|---|---|---|
| Wildlife | — | |
| Sports & Action | ||
| Landscape | ||
| Travel | — | |
| Portrait | ||
| Casual | — | |
| Astrophotography | — | |
| Street | — | |
| Vlogging & Video | — | |
| Wedding & Events | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history