OM-3vs FX3
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
VS
Sony
FX3 (2021)
Starting from £3799 new
Best for Professional video, documentary & cinematic filmmaking
View FX3
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.
Professional Video, Documentary & Cinematic Filmmaking — FX3 (2021): The definitive run-and-gun cinema camera — A7S III sensor quality in a body built specifically for video professionals.
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
FX3 (2021)
- Professional videographers and filmmakers who need cinema-quality colour science in a compact body
- Documentary and run-and-gun shooters who need 4K/120p and built-in XLR audio
- Sony A7S III owners who want a purpose-built video body alongside their stills camera
- Gimbal and drone operators who need a compact full-frame cinema camera
Quick take: The om-3 has the highest resolution at 20mp; the om-3 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-3 (2024) | FX3 (2021) |
|---|---|---|
| Price | £999 | £3,799 |
| Sensor | 20.4MP Live MOS Micro Four Thirds | 12.1MP full-frame BSI Exmor R CMOS (same as A7S III) |
| Resolution | 20.4MP | 12.1MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | Real-time tracking with subject recognition (human, animal) |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 5-axis IBIS — 5 stops |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 10fps mechanical, 10fps electronic |
| Battery Life | ~400 shots (CIPA) | ~640 shots (CIPA) |
| Weight | 414g (with battery) | 715g body only (with XLR handle) |
| Dimensions | 122.3 × 84.6 × 49.4mm | 129.7 × 78.0 × 84.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | None — monitor/external EVF use only |
| Screen | 3.0" fully articulating touchscreen | 3.0" touchscreen, fully articulating |
| Mount | Micro Four Thirds | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single SD UHS-II slot | Dual CFexpress Type A / SD UHS-II slots |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-Fi |
Suitability by genre
| Genre | OM-3 | FX3 |
|---|---|---|
| Travel | ||
| Wildlife | — | |
| Landscape | — | |
| Street | ||
| Portrait | ||
| Vlogging & Video | ||
| Low Light | — | |
| Wedding | — |
More comparisons with OM-3
Camera family history