OM-3vs A7C II
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
VS
GearScore™ Verdict — Which should you buy?
Travel, Outdoor & Adventure Photography — OM-3 (2024): The ideal mid-range OM System camera — weather sealed, class-leading IBIS, and superb computational features in a compact body.
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-3 (2024)
- Outdoor and adventure photographers who need weather sealing and compact size
- Wildlife and bird photographers wanting improved AF over the OM-5
- Travel shooters who want a rugged, lightweight MFT system
- OM-5 or E-M5 III owners wanting better autofocus without going to the OM-1
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-3 is the most affordable; only the om-3 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-3 (2024) | A7C II (2023) |
|---|---|---|
| Price | £999 | £1,499 |
| Sensor | 20.4MP Live MOS Micro Four Thirds | 33MP Full-frame Exmor R BSI CMOS |
| Resolution | 20.4MP | 33.0MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 4K/60p oversampled, S-Log3, 10-bit internal |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | 759-point phase-detect, AI subject recognition |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 5-axis IBIS, 7.0 stops |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 10fps mechanical, 30fps electronic |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 414g (with battery) | 514g body only |
| Dimensions | 122.3 × 84.6 × 49.4mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" vari-angle touchscreen |
| Mount | Micro Four Thirds | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-II slot | Dual slots: SD UHS-II + CFexpress Type A |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C (3.2), Bluetooth, Wi-Fi |
Suitability by genre
| Genre | OM-3 | A7C II |
|---|---|---|
| Travel | — | |
| Wildlife | — | |
| Landscape | ||
| Street | ||
| Portrait | ||
| Vlogging & Video | ||
| Wedding & Events | — | |
| Sports & Action | — |
More comparisons with OM-3
Camera family history