OM-3vs A7 II
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
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GearScore™ Verdict — Which should you buy?
Travel, Outdoor & Adventure Photography — OM-3 (2024): The ideal mid-range OM System camera — weather sealed, class-leading IBIS, and superb computational features in a compact body.
Travel, Portrait — A7 II (2014): The camera that proved full-frame IBIS was possible in a compact body.
Who should buy what
OM-3 (2024)
- 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
A7 II (2014)
- Photographers upgrading from APS-C who want full-frame on a budget
- Film shooters adapting vintage lenses (IBIS helps enormously)
Quick take: The a7 ii has the highest resolution at 24mp; the a7 ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-3 (2024) | A7 II (2014) |
|---|---|---|
| Price | £999 | £549 |
| Sensor | 20.4MP Live MOS Micro Four Thirds | Full-frame BSI CMOS 35mm |
| Resolution | 20.4MP | 24.3MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 1080p 60fps |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | 117-point phase-detect hybrid AF |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 5-axis IBIS, 4.5 stops |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 5fps |
| Battery Life | ~400 shots (CIPA) | 350 shots (CIPA) |
| Weight | 414g (with battery) | 599g (body only) |
| Dimensions | 122.3 × 84.6 × 49.4mm | 126.9 × 95.7 × 59.7mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | EVF 0.71× 2.36M-dot |
| Screen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 1.23M-dot |
| Mount | Micro Four Thirds | Sony E-Mount |
| Memory Cards | Single SD UHS-II slot | SD / Memory Stick Pro Duo |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Wi-Fi, NFC, Micro USB, Micro HDMI |
Suitability by genre
| Genre | OM-3 | A7 II |
|---|---|---|
| Travel | ||
| Wildlife | — | |
| Landscape | ||
| Street | ||
| Portrait | ||
| Vlogging & Video | ||
| Wedding & Events | — |
More comparisons with OM-3
Camera family history