OM System
OM-1 Mark II 2024
Best for Wildlife, birds & outdoor sports
£2049
new today at Clifton Cameras
Decision tools · Compare
OM-1 Mark II vs A9
Quick take: The A9 has the highest resolution at 24MP.
16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more
Verdictwhich should you buy?
OM-1 Mark II — Wildlife, Birds & Outdoor Sports: OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
A9 — Professional Sports, Wildlife & Action Photography: The camera that changed professional photography — the A9's 20fps blackout-free burst and silent shutter proved mirrorless had definitively surpassed the DSLR.
Who should buy what
OM-1 Mark II (2024)
is the right camera for you if…
- 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
A9 (2017)
is the right camera for you if…
- Sports photographers who want the original 20fps mirrorless at a lower used price than the A9 II
- Wildlife photographers who need blackout-free burst with fast, reliable tracking
- Sony FE system users who want a professional sports body
- Photographers interested in the camera that changed the industry
Full specificationsthe better value in each row is highlighted
| Specification | OM-1 Mark IIOM System · 2024 | A9Sony · 2017 |
|---|---|---|
| Price | £2,049 | £1,026 usedBest |
| Sensor | 20MP Micro Four Thirds Live MOS | 24.2MP Full-Frame Stacked BSI CMOS Exmor RS |
| Resolution | 20.0MP | 24.2MPBest |
| Video | 4K/60p, 1080p/240p, 4K HLG | 4K/30p, 1080p/120p |
| Autofocus | AI subject detection AF (birds, animals, motorsport) | 693 phase-detect + 25 contrast-detect, real-time eye/body tracking |
| Stabilisation | 8.5-stop IBIS | IBIS — 5-axis, up to 5 stops |
| Burst Rate | 120fps with AF trackingBest | 20fps (blackout-free, silent electronic shutter with full AF/AE) |
| Battery Life | 520 shots (CIPA) | ~650 shots (CIPA)Best |
| Weight | 599g (body only)Best | 673g (with battery and card) |
| Dimensions | 134.8 × 91.6 × 72.7mm | 126.9 × 95.6 × 63.0mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.83" OLED EVF, 5.76M dots, 120fps | EVF, OLED 3.69M dots, 0.78× magnification, 60fps refresh (blackout-free) |
| Screen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen |
| Mount | Micro Four Thirds | Sony FE (full-frame E-mount) |
| Memory Cards | Dual SD UHS-II | Dual SD UHS-II slots |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB, Wi-Fi 5GHz, Bluetooth, HDMI |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
OM-1 Mark II
A9
Portrait
7.6/10
7.5/10
Street
6.6/10
6.0/10
Travel
6.4/10
5.9/10
Wedding & Events
7.9/10
7.5/10
Vlogging & Video
6.2/10
—
Filmmaking
6.8/10
6.7/10
Documentary
7.9/10
6.8/10
Sports & Action
9.3/10
8.2/10
Landscape
6.1/10
6.1/10
Wildlife
9.1/10
8.2/10
Casual
5.5/10
4.6/10
Food
7.4/10
6.5/10
Macro
8.4/10
5.8/10
Architecture
6.3/10
6.0/10
Astrophotography
6.0/10
7.3/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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