OM System OM-1 Mark IIvs A7R VI
OM System
OM System OM-1 Mark II (2024)
Starting from £1999 new
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
Sony
A7R VI (2025)
Starting from £4399 new
Best for Studio, landscape and commercial photographers needing maximum resolution
View A7R VI
GearScore™ Verdict — Which should you buy?
Wildlife, Birds & Outdoor Sports — OM System OM-1 Mark II (2024): OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
Studio, Landscape And Commercial Photographers Needing Maximum Resolution — A7R VI (2025): The A7R VI cements its place as the resolution flagship of the Sony full-frame range — 61MP, AI-driven autofocus, and 8K video make it as capable for video and action work as it is for studio and landscape photography. The price reflects its position at the top of the lineup, but the capability is hard to match.
Who should buy what
OM System OM-1 Mark II (2024)
- Wildlife and bird photographers who need the best subject tracking in MFT
- Sports photographers who want weather sealing and 50fps burst
- OM-1 owners looking for a meaningful autofocus upgrade
- Professionals who need pro-grade weather sealing in the lightest possible system
A7R VI (2025)
- Studio and commercial photographers who need maximum resolution for large prints and heavy cropping
- Landscape photographers who want best-in-class dynamic range and detail
- Hybrid shooters who need 8K video alongside a 61MP stills sensor
- Professionals upgrading from the A7R V who want faster AI-driven autofocus
Quick take: The a7r vi has the highest resolution at 61mp; the om system om-1 mark ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM System OM-1 Mark II (2024) | A7R VI (2025) |
|---|---|---|
| Price | £1,999 | £4,399 |
| Sensor | 20MP Micro Four Thirds Live MOS | 61MP full-frame stacked back-illuminated CMOS |
| Resolution | 20.0MP | 61.0MP |
| Video | 4K/60p, 1080p/240p, 4K HLG | 8K 30fps, 4K 120fps oversampled |
| Autofocus | AI subject detection AF (birds, animals, motorsport) | AI processing unit — subject recognition for people, animals, birds and vehicles across the frame |
| Stabilisation | 8.5-stop IBIS | In-body 5-axis IS, up to 8.5 stops |
| Burst Rate | 120fps with AF tracking | 8fps mechanical / 7fps electronic with full AF/AE tracking |
| Battery Life | 520 shots (CIPA) | ~530 shots (CIPA, NP-FZ100) |
| Weight | 599g body only | 723g (body with battery and card) |
| Dimensions | 134.8 × 91.6 × 72.7mm | 131.3 × 96.9 × 82.8mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.83" OLED EVF, 5.76M dots, 120fps | EVF, 9.44M-dot, up to 120fps |
| Screen | 3.0" fully articulating touchscreen | 3.2-inch 4-axis multi-angle touchscreen, 3.69M-dot |
| Mount | Micro Four Thirds | Sony FE (full-frame E-mount) |
| Memory Cards | Dual SD UHS-II | Dual slots — CFexpress Type A / SD (UHS-II) |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C (10Gbps), Wi-Fi 6E, Bluetooth 5.0, 2.5GbE |
Suitability by genre
| Genre | OM System OM-1 Mark II | A7R VI |
|---|---|---|
| Wildlife | ||
| Sports & Action | ||
| Landscape | ||
| Travel | ||
| Portrait | ||
| Vlogging & Video | ||
| Street | — | |
| Casual | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history