EOS R8vs Z6 IIIvs Sigma fp
Sigma
Sigma fp (2019)
From £1499
Best for Creative filmmakers & experimental photographers
View Sigma fp
Which should you buy?
Full-Frame Entry — EOS R8 (2023): Canon's most affordable full-frame mirrorless — 4K/60p 10-bit and class-leading Dual Pixel AF at an accessible entry price.
Hybrid Video & Action — Z6 III (2024): Partial-stacked FF sensor for near-zero blackout, 6K RAW video, and 60fps burst — Nikon's most capable hybrid.
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.
Who should buy what
EOS R8 (2023)
- You want full-frame image quality on a tight budget
- You shoot mainly in good light and can live without built-in stabilisation
- You primarily shoot stills with occasional video
Z6 III (2024)
- You need the best all-round full-frame camera in Nikon's Z system
- You shoot in challenging or low light and need exceptional high-ISO performance
- You want a hybrid body that genuinely excels at both professional stills and video
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
Quick take: The sigma fp has the highest resolution at 25mp; the eos r8 is the most affordable; only the z6 iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R8 (2023) | Z6 III (2024) | Sigma fp (2019) |
|---|---|---|---|
| Price | £1,099 | £2,199 | £1,499 |
| Sensor | 24.2MP Full-frame BSI CMOS | 24.5MP Full-frame Partial-stacked CMOS | 24.6MP full-frame Bayer CMOS |
| Resolution | 24.2MP | 24.5MP | 24.6MP |
| Video | 4K/60p oversampled 10-bit, FHD/180p | 6K/60p RAW, 4K/120p, 4K/60p oversampled, N-Log, 10-bit | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p |
| Autofocus | Dual Pixel CMOS AF II, 1053 zones, eye/face/subject tracking | Phase-detect, 273 points, subject detection (human/animal/vehicle/aircraft) | Contrast-detect AF with face/eye detection |
| Stabilisation | None (no IBIS) | 5-axis IBIS, 6.0 stops | None (lens-based only) |
| Burst Rate | 6fps mechanical, 40fps electronic | 20fps mechanical, 60fps electronic | 18fps electronic |
| Battery Life | ~220 shots (CIPA) | ~380 shots (CIPA) | 200 shots (CIPA) |
| Weight | 461g body only | 760g body only | 422g body only |
| Dimensions | 132.5 × 86.1 × 70.0mm | 138.5 × 101.5 × 74.0mm | 112.6 × 69.9 × 45.3mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× | EVF, 5.76M dots, 0.90× magnification | None |
| Screen | 3.0" fully articulating touchscreen | 3.2" fully articulating touchscreen | 3.15" fixed touchscreen |
| Mount | Canon RF mount (full-frame) | Nikon Z-mount (full-frame) | Leica L-mount |
| Memory Cards | Single SD UHS-II slot | Dual slots: CFexpress Type B + SD UHS-II | Single SD UHS-II + CFexpress Type B (via adapter) |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C 3.2, Bluetooth, Wi-Fi | USB-C 3.1, Wi-Fi, Bluetooth |
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