OM System OM-1 Mark IIvs Sony A9 III
OM System
OM System OM-1 Mark II (2024)
From £1999
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
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.
Sports & Action Professionals — Sony A9 III (2023): A paradigm-shifting camera — the global shutter eliminates every rolling shutter limitation that has constrained action photography for years.
Who should buy what
OM System OM-1 Mark II (2024)
- You shoot wildlife, birds in flight, or fast-moving action where tracking accuracy is critical
- You need extreme weather sealing for shooting in rain, dust, mud, or freezing cold
- You're invested in the MFT ecosystem and want the absolute best body available
Sony A9 III (2023)
- You shoot professional sport, motorsport, or action and need zero rolling shutter distortion
- You need reliable high-speed flash sync for studio or on-location action work
- You want the absolute pinnacle of Sony's action and sports camera technology
Quick take: The sony a9 iii has the highest resolution at 25mp; the om system om-1 mark ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM System OM-1 Mark II (2024) | Sony A9 III (2023) |
|---|---|---|
| Price | £1,999 | £5,999 |
| Sensor | 20MP Micro Four Thirds Live MOS | 24.6MP full-frame Exmor RS CMOS (global shutter) |
| Resolution | 20.0MP | 24.6MP |
| Video | 4K/60p, 1080p/240p, 4K HLG | 4K/120p, 4K/60p, 1080p/240p |
| Autofocus | AI subject detection AF (birds, animals, motorsport) | AI subject recognition AF, 759-point phase-detect |
| Stabilisation | 8.5-stop IBIS | 8-stop IBIS |
| Burst Rate | 120fps with AF tracking | 120fps blackout-free electronic |
| Battery Life | 520 shots (CIPA) | 530 shots (CIPA) |
| Weight | 599g body only | 703g body only |
| Dimensions | 134.8 × 91.6 × 72.7mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.83" OLED EVF, 5.76M dots, 120fps | 0.64" Quad-XGA OLED EVF, 9.44M dots |
| Screen | 3.0" fully articulating touchscreen | 3.2" fully articulating touchscreen |
| Mount | Micro Four Thirds | Sony FE (E-mount) |
| Memory Cards | Dual SD UHS-II | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3 |
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