OM System
OM-3 2025
Best for Travel, outdoor & adventure photography
£1599
new today at Clifton Cameras
Decision tools · Compare
OM-3 vs A5000
Quick take: The OM-3 has the highest resolution at 20MP; the A5000 is the most affordable; only the OM-3 is weather sealed.
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-3 — Travel, Outdoor & Adventure Photography: The ideal mid-range OM System camera — weather sealed, class-leading IBIS, and superb computational features in a compact body.
Who should buy what
OM-3 (2025)
is the right camera for you if…
- 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
Full specificationsthe better value in each row is highlighted
| Specification | OM-3OM System · 2025 | A5000Sony · 2014 |
|---|---|---|
| Price | £1,599 | £154Best |
| Sensor | 20.4MP Live MOS Micro Four Thirds | 20.1MP APS-C CMOS |
| Resolution | 20.4MPBest | 20.1MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | Full HD 1080 (60i / 25p AVCHD), 1440×1080/30p MP4 |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | 25-point contrast AF with face detection |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | No IBIS (lens-based stabilisation only) |
| Burst Rate | 10fps mechanical, 30fps electronic with AFBest | 3.5fps |
| Battery Life | ~400 shots (CIPA) | ~420 shots (CIPA)Best |
| Weight | 414g (with battery and card) | 269g (with battery)Best |
| Dimensions | 122.3 × 84.6 × 49.4mm | 109.6 × 62.8 × 35.7mm |
| Weather Sealed | YesBest | Not weather sealed |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | None (rear screen only) |
| Screen | 3.0" fully articulating touchscreen | 3.0" 180° flip-up LCD, 460k dots |
| Mount | Micro Four Thirds | Sony E-mount |
| Memory Cards | Single SD UHS-II slot | Single SD slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Micro USB (Multi Terminal), micro HDMI, Wi-Fi, NFC |
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-3
A5000
Portrait
7.3/10
4.3/10
Street
6.9/10
6.5/10
Travel
6.7/10
6.1/10
Wedding & Events
6.8/10
2.6/10
Vlogging & Video
6.5/10
—
Filmmaking
6.7/10
—
Documentary
7.9/10
3.5/10
Sports & Action
8.9/10
3.1/10
Landscape
6.2/10
4.7/10
Wildlife
9.0/10
4.2/10
Casual
5.8/10
4.2/10
Food
7.3/10
5.2/10
Macro
8.2/10
4.7/10
Architecture
6.3/10
4.8/10
Astrophotography
6.1/10
4.8/10
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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