OM-1vs A7C
GearScore™ Verdict — Which should you buy?
Wildlife, Sport, Outdoor — OM-1 (2022): OM System's statement camera — class-leading weather sealing and the best IBIS in the business.
Compact Travel & Content Creation — A7C (2020): The A7C proves full-frame doesn't have to be bulky. Excellent battery life, reliable Eye AF and a vari-angle screen in a pocketable body is a compelling combination for travel and content creators. The A7C II improved on it, but the original remains a strong value buy.
Who should buy what
OM-1 (2022)
- Wildlife and bird photographers who need fast burst and pro weather sealing
- Outdoor photographers who work in challenging conditions
A7C (2020)
- Travel photographers who want full-frame in the smallest possible body
- Content creators who need a flip screen and reliable Eye AF
- Photographers upgrading from APS-C who want to keep a compact kit
- Vloggers who need 4K and great battery life on the road
Quick take: The a7c has the highest resolution at 24mp; only the om-1 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM-1 (2022) | A7C (2020) |
|---|---|---|
| Price | £1,299 | £1,299 |
| Sensor | Micro Four Thirds Live MOS stacked BSI | 24.2MP Full-Frame Exmor R BSI CMOS |
| Resolution | 20.4MP | 24.2MP |
| Video | 4K 60fps 10-bit | 4K/30p (oversampled), 1080p/120p slow-motion, S-Log2/S-Log3 |
| Autofocus | 1053-point cross-type phase-detect, AI subject recognition | Phase-detect, 693 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 7.0 stops (8 stops with sync IS) | 5-axis IBIS, 5 stops |
| Burst Rate | 10fps mechanical, 50fps electronic, 120fps Pro Capture | 10fps with AF/AE tracking |
| Battery Life | 520 shots (CIPA) | ~740 shots (CIPA) — outstanding for a Sony mirrorless |
| Weight | 599g (body only) | 509g (body, battery, card) |
| Dimensions | 134.8 × 91.6 × 72.7mm | 124.0 × 71.1 × 59.7mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF 0.83× 5.76M-dot | None built-in — use rear screen or accessory EVF |
| Screen | 3.0" fully articulating touchscreen, 1.62M-dot | 3.0" vari-angle touchscreen, 921k dots |
| Mount | Micro Four Thirds | Sony E-mount |
| Memory Cards | 2× SD UHS-II / CFexpress Type B | Single SD UHS-II |
| Connectivity | Wi-Fi 5GHz, Bluetooth 5.0, USB-C 3.1, HDMI, 3.5mm mic/headphone | USB-C (USB 3.2 Gen 2), Wi-Fi, Bluetooth, NFC |
Suitability by genre
| Genre | OM-1 | A7C |
|---|---|---|
| Wildlife | ||
| Sports & Action | — | |
| Landscape | — | |
| Travel | ||
| Portrait | ||
| Casual | — | |
| Astrophotography | — | |
| Video | — | |
| Street | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with OM-1
Camera family history