OM-3vs A7 V
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
VS
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.
Portrait, Wedding, Travel, Video — A7 V (2024): The definitive full-frame mirrorless. Hard to argue for anything else at this price.
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 V (2024)
- A7 III or A7 IV owners ready for a meaningful upgrade
- Photographers who want one camera to cover everything
Quick take: The a7 v has the highest resolution at 33mp; the om-3 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-3 (2024) | A7 V (2024) |
|---|---|---|
| Price | £999 | £2,799 |
| Sensor | 20.4MP Live MOS Micro Four Thirds | Full-frame BSI-CMOS 35mm, partially stacked |
| Resolution | 20.4MP | 33.0MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 4K 60fps 10-bit |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | 759-point phase-detect, AI subject recognition (human, animal, bird, insect, vehicle) |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 5-axis IBIS, 8.0 stops |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 10fps mechanical, 20fps electronic |
| Battery Life | ~400 shots (CIPA) | 760 shots (CIPA) |
| Weight | 414g (with battery) | 514g (body only) |
| Dimensions | 122.3 × 84.6 × 49.4mm | 131.3 × 96.4 × 70.0mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | EVF 0.90× 9.44M-dot |
| Screen | 3.0" fully articulating touchscreen | 3.2" fully articulating touchscreen, 1.44M-dot |
| Mount | Micro Four Thirds | Sony E-Mount |
| Memory Cards | Single SD UHS-II slot | 2× SD UHS-II / CFexpress Type A |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Wi-Fi 6GHz, Bluetooth 5.3, USB-C 3.2 Gen 2 |
Suitability by genre
| Genre | OM-3 | A7 V |
|---|---|---|
| Travel | — | |
| Wildlife | — | |
| Landscape | — | |
| Street | — | |
| Portrait | — | |
| Vlogging & Video | — |
More comparisons with OM-3
Camera family history