OM System
OM-3 2025
Best for Travel, outdoor & adventure photography
£1649
new today at Clifton Cameras
Decision tools · Compare
OM-3 vs PEN
Quick take: The PEN is the most affordable.
16 specs side by side·16 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 | PENOM System · 2026 |
|---|---|---|
| Price | £1,649 | £849Best |
| Sensor | 20.4MP Live MOS Micro Four Thirds | 20.4MP Four Thirds Live MOS |
| Resolution | 20.4MP | 20.4MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 4K/C4K, OM-Log400, vertical video support |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | Phase-hybrid AF (121 points) with subject detection (people, cats, dogs) |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 5.5-stop IBIS |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 30fps electronicBest |
| Battery Life | ~400 shots (CIPA) | 410 shots (CIPA)Best |
| Weight | 414g (with battery and card) | 393g (with battery and card)Best |
| Dimensions | 122.3 × 84.6 × 49.4mm | — |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | EVF, 2.36M dots |
| Screen | 3.0" fully articulating touchscreen | Tilting touchscreen |
| Mount | Micro Four Thirds | Micro Four Thirds |
| Memory Cards | Single SD UHS-II slot | Single SD (UHS-I) |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
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
PEN
Portrait
7.3/10
7.0/10
Street
6.9/10
7.8/10
Travel
6.9/10
7.4/10
Wedding & Events
6.8/10
6.3/10
Vlogging & Video
6.7/10
6.7/10
Filmmaking
6.7/10
5.2/10
Documentary
7.9/10
7.0/10
Sports & Action
8.9/10
7.7/10
Landscape
6.2/10
6.1/10
Wildlife
9.0/10
8.1/10
Casual
5.8/10
6.3/10
Food
7.3/10
6.9/10
Macro
8.2/10
6.8/10
Architecture
6.3/10
6.1/10
Astrophotography
6.1/10
5.9/10
Fun & simple
—
4.7/10
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 →
Next
More comparisons with OM-3
Camera family history