EOS R6 Mark IIvs Sigma fp Lvs A7 III
Sigma
Sigma fp L (2021)
From £1999
Best for High-resolution creative & documentary shooters
View Sigma fp L
Which should you buy?
Portraits & Action — EOS R6 Mark II (2022): 40fps burst, 8-stop IBIS, and Canon's best-in-class Dual Pixel AF — exceptional for action, sports, and portrait work.
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.
All-Round Photography & Video — A7 III (2018): Still one of the best all-round cameras money can buy — particularly strong used. The A7 III proved that full-frame doesn't have to mean compromises, and nothing at this price point has meaningfully beaten it.
Who should buy what
EOS R6 Mark II (2022)
- You want a do-everything full-frame body for weddings and events
- You need reliable subject tracking across stills and fast-moving video
- You shoot both photos and video professionally and need a single body that handles both
- You want Canon's colour science with a modern mirrorless system
Sigma fp L (2021)
- You need the highest resolution available in the smallest possible full-frame mirrorless
- You shoot architecture, landscape, or commercial work where fine detail is absolutely critical
- You want the cinematic flexibility of the fp platform paired with maximum megapixel count
A7 III (2018)
- Enthusiast photographers upgrading from APS-C for the first time
- Working photographers who need reliable AF and weather sealing
- Anyone who shoots in low light regularly
- Hybrid shooters needing both stills and video performance
Quick take: The sigma fp l has the highest resolution at 61mp; the a7 iii is the most affordable; only the eos r6 mark ii, a7 iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R6 Mark II (2022) | Sigma fp L (2021) | A7 III (2018) |
|---|---|---|---|
| Price | £2,099 | £1,999 | £1,699 |
| Sensor | 24.2MP Full-frame BSI CMOS | 61MP full-frame BSI CMOS | 24.2MP Full-Frame Exmor R BSI CMOS |
| Resolution | 24.2MP | 61.0MP | 24.2MP |
| Video | 4K/60p 10-bit oversampled, 6K RAW out, FHD/180p | 12-bit Cinema DNG RAW, 4K/24p | 4K/30p (6K oversampled), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II, 6072 zones, deep-learning subject tracking | Phase-detect AF with face/eye detection | Phase-detect, 693 points, real-time Eye AF & animal AF |
| Stabilisation | 5-axis IBIS, 8.0 stops (coordinated with IS lenses) | None (lens-based only) | 5-axis IBIS, 5 stops |
| Burst Rate | 12fps mechanical, 40fps electronic | 18fps electronic | 10fps with AF/AE tracking |
| Battery Life | ~760 shots (CIPA) | 200 shots (CIPA) | ~710 shots (CIPA) |
| Weight | 670g body only | 427g body only | 565g (body, battery, card) |
| Dimensions | 138.4 × 98.4 × 88.4mm | 112.6 × 69.9 × 45.3mm | 126.9 × 95.6 × 73.7mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | EVF, 3.69M dots, 0.76× magnification | None (optional clip-on EVF available) | EVF, 2.36M dots, 0.78× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.15" fixed touchscreen | 3.0" tilting touchscreen, 921k dots |
| Mount | Canon RF mount (full-frame) | Leica L-mount | Sony E-mount |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-II | Dual SD (UHS-II slot 1, UHS-I slot 2) |
| Connectivity | USB-C 3.1, Bluetooth, Wi-Fi | USB-C 3.1, Wi-Fi, Bluetooth | USB-C (USB 3.2), Wi-Fi, Bluetooth, NFC |
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