Canon EOS R3vs OM-D E-M10 IVvs 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.
Travel & Everyday — OM-D E-M10 IV (2020): Compact Micro Four Thirds body with built-in IBIS — ideal for travellers who want stability without bulk.
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
OM-D E-M10 IV (2020)
- You're new to mirrorless and want a small, uncomplicated first camera to learn on
- You want excellent in-body stabilisation to steady handheld video and shake-prone shooting
- You're drawn to the Micro Four Thirds ecosystem and want to start at the entry level
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 canon eos r3 has the highest resolution at 24mp; the om-d e-m10 iv 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) | OM-D E-M10 IV (2020) | OM System OM-1 Mark II (2024) |
|---|---|---|---|
| Price | £5,999 | £469 | £1,999 |
| Sensor | 24.1MP full-frame BSI stacked CMOS | 20.3MP Micro Four Thirds Live MOS | 20MP Micro Four Thirds Live MOS |
| Resolution | 24.1MP | 20.3MP | 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 detect, 121 points | AI subject detection AF (birds, animals, motorsport) |
| Stabilisation | 8-stop IBIS | 5-axis IBIS, 4.5 stops | 8.5-stop IBIS |
| Burst Rate | 30fps electronic / 12fps mechanical | 15fps | 120fps with AF tracking |
| Battery Life | 620 shots (CIPA) | ~360 shots (CIPA) | 520 shots (CIPA) |
| Weight | 1015g body only | 383g body only | 599g body only |
| Dimensions | 150.0 × 142.6 × 87.2mm | 121.4 × 83.6 × 49.0mm | 134.8 × 91.6 × 72.7mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | 0.76" OLED EVF, 5.76M dots, 120fps | EVF, 2.36M dots, 0.46× magnification | 0.83" OLED EVF, 5.76M dots, 120fps |
| Screen | 3.2" fully articulating touchscreen | 3.0" tilting touchscreen | 3.0" fully articulating touchscreen |
| Mount | Canon RF | Micro Four Thirds | 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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