Canon EOS R3vs Sigma fpvs Sony FX30
Canon
Canon EOS R3 (2021)
From £5999
Best for Sports & photojournalism professionals
View Canon EOS R3
Sigma
Sigma fp (2019)
From £1499
Best for Creative filmmakers & experimental photographers
View Sigma fp
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.
Creative Filmmakers & Experimental Photographers — Sigma fp (2019): The smallest full-frame camera in the world — Cinema DNG RAW and L-mount flexibility in a pocket-sized body that rewards creative shooters.
Video Creators & Filmmakers — Sony FX30 (2022): The Cinema Line entry point — S-Cinetone colour science, 4K/120p, and XLR audio in a compact, affordable body that punches far above its price.
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
Sigma fp (2019)
- You're a filmmaker building a cinema rig where the smallest full-frame body is essential
- You want L-mount compatibility to pair with Sigma Art or Leica SL lenses
- You prioritise video and cinema colour over stills ergonomics and functionality
Sony FX30 (2022)
- You're a filmmaker or video producer who wants Sony cinema colour in a compact, affordable body
- You want 4K/120fps slow motion without the cost of an FX3 or FX6
- You shoot documentary, corporate video, or YouTube content at a professional standard
Quick take: The sony fx30 has the highest resolution at 26mp; the sigma fp is the most affordable; only the canon eos r3, sony fx30 are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS R3 (2021) | Sigma fp (2019) | Sony FX30 (2022) |
|---|---|---|---|
| Price | £5,999 | £1,499 | £1,799 |
| Sensor | 24.1MP full-frame BSI stacked CMOS | 24.6MP full-frame Bayer CMOS | 26.1MP APS-C BSI Exmor R CMOS |
| Resolution | 24.1MP | 24.6MP | 26.1MP |
| Video | 6K RAW, 4K/120p, 1080p/180p | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 4K/120p, 4K/60p S-Log3, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF II with Eye Control AF | Contrast-detect AF with face/eye detection | Real-time tracking AF, 759-point phase-detect |
| Stabilisation | 8-stop IBIS | None (lens-based only) | 5-axis Active IBIS |
| Burst Rate | 30fps electronic / 12fps mechanical | 18fps electronic | 20fps electronic |
| Battery Life | 620 shots (CIPA) | 200 shots (CIPA) | 740 shots (CIPA) |
| Weight | 1015g body only | 422g body only | 579g body only |
| Dimensions | 150.0 × 142.6 × 87.2mm | 112.6 × 69.9 × 45.3mm | 129.7 × 77.8 × 84.5mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | 0.76" OLED EVF, 5.76M dots, 120fps | None | None (EVF optional via XLR handle) |
| Screen | 3.2" fully articulating touchscreen | 3.15" fixed touchscreen | 3.0" fully articulating touchscreen |
| Mount | Canon RF | Leica L-mount | Sony FE (E-mount) |
| Memory Cards | Dual CFexpress Type B | Single SD UHS-II + CFexpress Type B (via adapter) | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth, LAN | USB-C 3.1, Wi-Fi, Bluetooth | USB-C 3.2, HDMI A, Wi-Fi, Bluetooth |
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