OM System OM-1 Mark IIvs A6600
OM System
OM System OM-1 Mark II (2024)
Starting from £1999 new
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
Sony
A6600 (2019)
Starting from £1299 new
Best for Hybrid photography, travel & video on Sony APS-C
View A6600
GearScore™ Verdict — Which should you buy?
Wildlife, Birds & Outdoor Sports — OM System OM-1 Mark II (2024): OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
Hybrid Photography, Travel & Video On Sony Aps-C — A6600 (2019): The APS-C Sony that has everything — IBIS, real-time Eye AF, excellent battery life, and 4K/30p in a weather-sealed body.
Who should buy what
OM System OM-1 Mark II (2024)
- Wildlife and bird photographers who need the best subject tracking in MFT
- Sports photographers who want weather sealing and 50fps burst
- OM-1 owners looking for a meaningful autofocus upgrade
- Professionals who need pro-grade weather sealing in the lightest possible system
A6600 (2019)
- Sony APS-C shooters who need IBIS — the only A6000-series body to offer it
- Hybrid photographers who want the best of stills and video from a compact E-mount body
- A6400 or A6100 owners who want IBIS and a headphone jack for video work
- Travel photographers who need compact full-featured weather-sealed performance
Quick take: The a6600 has the highest resolution at 24mp; the a6600 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM System OM-1 Mark II (2024) | A6600 (2019) |
|---|---|---|
| Price | £1,999 | £1,299 |
| Sensor | 20MP Micro Four Thirds Live MOS | 24.2MP APS-C Exmor CMOS |
| Resolution | 20.0MP | 24.2MP |
| Video | 4K/60p, 1080p/240p, 4K HLG | 4K/30p (no crop), 1080p/120p |
| Autofocus | AI subject detection AF (birds, animals, motorsport) | Real-time Eye AF, real-time tracking — inherited from A9 |
| Stabilisation | 8.5-stop IBIS | 5-axis IBIS — 5 stops |
| Burst Rate | 120fps with AF tracking | 11fps continuous with AF/AE |
| Battery Life | 520 shots (CIPA) | ~810 shots (CIPA) — large NP-FZ100 battery |
| Weight | 599g body only | 503g body only |
| Dimensions | 134.8 × 91.6 × 72.7mm | 120 × 66.9 × 69.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.83" OLED EVF, 5.76M dots, 120fps | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" touchscreen, tilting |
| Mount | Micro Four Thirds | Sony E-mount (APS-C) |
| Memory Cards | Dual SD UHS-II | Single SD UHS-I slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Bluetooth, Wi-Fi, 3.5mm mic & headphone jacks |
Suitability by genre
| Genre | OM System OM-1 Mark II | A6600 |
|---|---|---|
| Wildlife | ||
| Sports & Action | — | |
| Landscape | — | |
| Travel | ||
| Portrait | ||
| Vlogging & Video | ||
| Street | — | |
| Sports | — |
More comparisons with OM System OM-1 Mark II
Camera family history