EOS R6 Mark IIIvs Sigma fp L
Canon
EOS R6 Mark III (2025)
Starting from £2799 new
Best for Hybrid photo & video professionals, sports and wildlife shooters
View EOS R6 Mark III
Sigma
Sigma fp L (2021)
Starting from £1999 new
Best for High-resolution creative & documentary shooters
View Sigma fp L
GearScore™ Verdict — Which should you buy?
Hybrid Photo & Video Professionals, Sports And Wildlife Shooters — EOS R6 Mark III (2025): The EOS R6 Mark III takes everything that made the Mark II a hybrid favourite and pushes it further — a faster stacked sensor, smarter autofocus, and genuinely professional video specs. It's the most complete all-rounder in Canon's RF full-frame lineup, sitting just below the R5 II in resolution while matching it for speed.
High-Resolution Creative & Documentary Shooters — Sigma fp L (2021): 61MP and phase-detect AF in the world's smallest full-frame body — the fp L is the most capable iteration of Sigma's extraordinary compact.
Who should buy what
EOS R6 Mark III (2025)
- Working photographers who need a single body for both stills and serious video work
- Sports and wildlife shooters who need 40fps burst shooting with reliable subject tracking
- Hybrid content creators producing 4K and 6K footage alongside high-resolution stills
- Enthusiasts upgrading from the EOS R6 Mark II who want faster AF and more resolution
Sigma fp L (2021)
- Commercial photographers who want 61MP in the world's smallest full-frame body
- Filmmakers using the fp L as a high-resolution cinema camera
- fp owners who need more resolution for large-format printing
- L-mount photographers who want extreme resolution in an ultra-compact form
Quick take: The sigma fp l has the highest resolution at 61mp; the sigma fp l is the most affordable; only the eos r6 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark III (2025) | Sigma fp L (2021) |
|---|---|---|
| Price | £2,799 | £1,999 |
| Sensor | 32.5MP full-frame stacked CMOS | 61MP full-frame BSI CMOS |
| Resolution | 32.5MP | 61.0MP |
| Video | 4K 60fps oversampled from 7K, 6K RAW internal | 12-bit Cinema DNG RAW, 4K/24p |
| Autofocus | Dual Pixel CMOS AF II — deep-learning subject detection for people, animals and vehicles, up to 40fps tracking | Phase-detect AF with face/eye detection |
| Stabilisation | In-body 5-axis IS, up to 8.5 stops | None (lens-based only) |
| Burst Rate | 40fps (electronic shutter), 12fps (mechanical) | 18fps electronic |
| Battery Life | ~580 shots (CIPA, LP-E6P) | 200 shots (CIPA) |
| Weight | 670g (body with battery and card) | 427g body only |
| Dimensions | 138.4 × 98.4 × 88.4mm | 112.6 × 69.9 × 45.3mm |
| Weather Sealed | Yes | No |
| Viewfinder | EVF, 5.76M-dot, up to 120fps | None (optional clip-on EVF available) |
| Screen | 3.2-inch vari-angle touchscreen, 2.1M-dot | 3.15" fixed touchscreen |
| Mount | Canon RF | Leica L-mount |
| Memory Cards | Dual SD / SDHC / SDXC (UHS-II) | Single SD UHS-II |
| Connectivity | USB-C, Wi-Fi 6, Bluetooth 5.0, 2.5GbE | USB-C 3.1, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | EOS R6 Mark III | Sigma fp L |
|---|---|---|
| Sports & Action | ||
| Wildlife | — | |
| Vlogging & Video | ||
| Portrait | ||
| Landscape | ||
| Travel | ||
| 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