Canon EOS R3vs X-A7vs OM System OM-1 Mark II
Canon
Canon EOS R3 (2021)
From £5999
Best for Sports & photojournalism professionals
View Canon EOS R3
OM System
OM System OM-1 Mark II (2024)
From £1999
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
Which should you buy?
Sports & Photojournalism Professionals — Canon EOS R3 (2021): The pinnacle of Canon's mirrorless lineup for speed — Eye Control AF and 30fps burst in the most rugged body Canon has ever produced.
Beginner Fujifilm — X-A7 (2019): The most affordable X-mount entry — Fujifilm colour and film simulations with a large flip screen for beginners.
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.
Who should buy what
Canon EOS R3 (2021)
- You shoot sport, motorsport, wildlife, or news at a professional level
- You need Canon's most reliable and fastest autofocus available
- You need extreme weather sealing for demanding shooting conditions
X-A7 (2019)
- You want an affordable first mirrorless with decent video capabilities
- You shoot a lot of selfie-style content or vlog on a budget
- Note: no viewfinder and limited lens support — the X-T30 II is a better long-term investment
OM System OM-1 Mark II (2024)
- You shoot wildlife, birds in flight, or fast-moving action where tracking accuracy is critical
- You need extreme weather sealing for shooting in rain, dust, mud, or freezing cold
- You're invested in the MFT ecosystem and want the absolute best body available
Quick take: The x-a7 has the highest resolution at 24mp; the x-a7 is the most affordable; only the canon eos r3, om system om-1 mark ii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS R3 (2021) | X-A7 (2019) | OM System OM-1 Mark II (2024) |
|---|---|---|---|
| Price | £5,999 | £399 | £1,999 |
| Sensor | 24.1MP full-frame BSI stacked CMOS | 24.2MP APS-C CMOS (Bayer, not X-Trans) | 20MP Micro Four Thirds Live MOS |
| Resolution | 24.1MP | 24.2MP | 20.0MP |
| Video | 6K RAW, 4K/120p, 1080p/180p | 4K/30p, 1080p/60p | 4K/60p, 1080p/240p, 4K HLG |
| Autofocus | Dual Pixel CMOS AF II with Eye Control AF | Phase-detect + contrast, 425 points | AI subject detection AF (birds, animals, motorsport) |
| Stabilisation | 8-stop IBIS | None (no IBIS) | 8.5-stop IBIS |
| Burst Rate | 30fps electronic / 12fps mechanical | 6fps | 120fps with AF tracking |
| Battery Life | 620 shots (CIPA) | ~440 shots (CIPA) | 520 shots (CIPA) |
| Weight | 1015g body only | 320g body only | 599g body only |
| Dimensions | 150.0 × 142.6 × 87.2mm | 118.0 × 80.6 × 55.2mm | 134.8 × 91.6 × 72.7mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | 0.76" OLED EVF, 5.76M dots, 120fps | None | 0.83" OLED EVF, 5.76M dots, 120fps |
| Screen | 3.2" fully articulating touchscreen | 3.5" fully articulating touchscreen | 3.0" fully articulating touchscreen |
| Mount | Canon RF | Fujifilm X-mount | Micro Four Thirds |
| Memory Cards | Dual CFexpress Type B | Single SD UHS-I slot | Dual SD UHS-II |
| Connectivity | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | USB Micro-B, Bluetooth, Wi-Fi, micro HDMI | USB-C, Wi-Fi, Bluetooth |
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