OM-3vs A7CR
OM System
OM-3 (2024)
Starting from £999 new
Best for Travel, outdoor & adventure photography
View OM-3
VS
Sony
A7CR (2023)
Starting from £3099 new
Best for Travel, landscape & portrait photography with minimal kit
View A7CR
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, Landscape & Portrait Photography With Minimal Kit — A7CR (2023): The world's smallest 61MP full-frame camera — A7R V quality in a pocketable A7C 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
A7CR (2023)
- Landscape photographers who want 61MP resolution without carrying a large body
- Travel photographers who need professional image quality in the smallest possible package
- Portrait shooters who want A7R V sensor quality with the ease of the A7C form factor
- A7C owners ready for a major resolution upgrade without changing bodies
Quick take: The a7cr has the highest resolution at 61mp; the om-3 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-3 (2024) | A7CR (2023) |
|---|---|---|
| Price | £999 | £3,099 |
| Sensor | 20.4MP Live MOS Micro Four Thirds | 61.0MP full-frame BSI CMOS |
| Resolution | 20.4MP | 61.0MP |
| Video | 4K/60p (10-bit), C4K/30p, 1080p/120p | 4K/60p 10-bit, 1080p/120p — S-Log3, S-Cinetone |
| Autofocus | Phase-detect AF — subject recognition (human, animal, bird, vehicle) | AI subject recognition — phase-detect with human, animal, bird detection |
| Stabilisation | IBIS — up to 6.5 stops (7.5 stops with Sync IS lenses) | 7-stop IBIS |
| Burst Rate | 10fps mechanical, 30fps electronic with AF | 8fps mechanical, 15fps electronic |
| Battery Life | ~400 shots (CIPA) | ~530 shots (CIPA) |
| Weight | 414g (with battery) | 514g body only |
| Dimensions | 122.3 × 84.6 × 49.4mm | 124.0 × 71.1 × 63.4mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.74× magnification | EVF 0.70× 2.36M-dot |
| Screen | 3.0" fully articulating touchscreen | 3.0" fully articulating touchscreen, 1.03M dots |
| Mount | Micro Four Thirds | Sony E-mount (full-frame) |
| Memory Cards | Single SD UHS-II slot | Single CFexpress Type A / SD UHS-II slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C 3.2 Gen 2, Wi-Fi 5GHz, Bluetooth 5.0 |
Suitability by genre
| Genre | OM-3 | A7CR |
|---|---|---|
| Travel | ||
| Wildlife | — | |
| Landscape | ||
| Street | ||
| Portrait | ||
| Vlogging & Video | ||
| Sports | — |
More comparisons with OM-3
Camera family history