Canon EOS 90Dvs Sigma fpvs Sony A9 III
Canon
Canon EOS 90D (2019)
From £849
Best for Sports, wildlife & DSLR enthusiasts
View Canon EOS 90D
Sigma
Sigma fp (2019)
From £1499
Best for Creative filmmakers & experimental photographers
View Sigma fp
Which should you buy?
Sports, Wildlife & Dslr Enthusiasts — Canon EOS 90D (2019): The best APS-C DSLR Canon ever made — 32MP, 10fps, weather sealing, and an optical viewfinder experience no mirrorless can replicate.
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.
Sports & Action Professionals — Sony A9 III (2023): A paradigm-shifting camera — the global shutter eliminates every rolling shutter limitation that has constrained action photography for years.
Who should buy what
Canon EOS 90D (2019)
- You're invested in Canon EF DSLR lenses and don't want to switch systems
- You shoot wildlife or sports and prefer an optical viewfinder
- You want a mid-range DSLR upgrade without going mirrorless
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 A9 III (2023)
- You shoot professional sport, motorsport, or action and need zero rolling shutter distortion
- You need reliable high-speed flash sync for studio or on-location action work
- You want the absolute pinnacle of Sony's action and sports camera technology
Quick take: The canon eos 90d has the highest resolution at 32mp; the canon eos 90d is the most affordable; only the canon eos 90d, sony a9 iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS 90D (2019) | Sigma fp (2019) | Sony A9 III (2023) |
|---|---|---|---|
| Price | £849 | £1,499 | £5,999 |
| Sensor | 32.5MP APS-C CMOS (Dual Pixel AF) | 24.6MP full-frame Bayer CMOS | 24.6MP full-frame Exmor RS CMOS (global shutter) |
| Resolution | 32.5MP | 24.6MP | 24.6MP |
| Video | 4K/30p (1.6× crop), FHD/120p | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | 4K/120p, 4K/60p, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) | Contrast-detect AF with face/eye detection | AI subject recognition AF, 759-point phase-detect |
| Stabilisation | None (no IBIS) | None (lens-based only) | 8-stop IBIS |
| Burst Rate | 10fps mechanical | 18fps electronic | 120fps blackout-free electronic |
| Battery Life | ~1300 shots (CIPA with OVF) | 200 shots (CIPA) | 530 shots (CIPA) |
| Weight | 701g body only | 422g body only | 703g body only |
| Dimensions | 140.7 × 104.8 × 76.8mm | 112.6 × 69.9 × 45.3mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | Optical pentaprism, 100% coverage, 0.95× magnification | None | 0.64" Quad-XGA OLED EVF, 9.44M dots |
| Screen | 3.0" vari-angle touchscreen | 3.15" fixed touchscreen | 3.2" fully articulating touchscreen |
| Mount | Canon EF / EF-S | Leica L-mount | Sony FE (E-mount) |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-II + CFexpress Type B (via adapter) | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB 2.0, Bluetooth, Wi-Fi | USB-C 3.1, Wi-Fi, Bluetooth | USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3 |
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