Canon EOS 90Dvs EOS R100vs Olympus OM-D E-M5 III
Canon
Canon EOS 90D (2019)
From £849
Best for Sports, wildlife & DSLR enthusiasts
View Canon EOS 90D
OM System
Olympus OM-D E-M5 III (2019)
From £699
Best for Travel & lightweight outdoor photography
View Olympus OM-D E-M5 III
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.
First Camera / Beginner Photography — EOS R100 (2023): The R100 does the basics well at the lowest possible price point. Its main value is as a gateway into the Canon RF ecosystem — the lenses you buy now will work on any Canon body you upgrade to later. Modest ambitions, reliably met.
Travel & Lightweight Outdoor Photography — Olympus OM-D E-M5 III (2019): The lightest weather-sealed MFT camera — compact, travel-friendly, and capable with 7.5-stop IBIS in a body that fits in a jacket pocket.
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
EOS R100 (2023)
- First-time camera buyers stepping up from a smartphone
- Students and hobbyists wanting an affordable starting point
- Anyone who wants to start investing in Canon RF glass on a budget
- Casual photographers who don't need advanced video or speed
Olympus OM-D E-M5 III (2019)
- You want a lightweight, sealed camera for travel and outdoor photography
- You're new to Micro Four Thirds and want a capable mid-range body with excellent stabilisation
- Note: consider the newer OM-5 for updated specs in a similar compact form factor
Quick take: The canon eos 90d has the highest resolution at 32mp; the eos r100 is the most affordable; only the canon eos 90d, olympus om-d e-m5 iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Canon EOS 90D (2019) | EOS R100 (2023) | Olympus OM-D E-M5 III (2019) |
|---|---|---|---|
| Price | £849 | £529 | £699 |
| Sensor | 32.5MP APS-C CMOS (Dual Pixel AF) | 24.1MP APS-C CMOS | 20.4MP Micro Four Thirds Live MOS |
| Resolution | 32.5MP | 24.1MP | 20.4MP |
| Video | 4K/30p (1.6× crop), FHD/120p | 4K/30p (slight crop), 1080p/60p | 4K/30p, 1080p/120p |
| Autofocus | Dual Pixel CMOS AF (live view), 45-point phase-detect (OVF) | Dual Pixel CMOS AF, face detection, subject tracking | Hybrid phase/contrast AF with face/eye detection |
| Stabilisation | None (no IBIS) | None (no IBIS) | 7.5-stop 5-axis IBIS |
| Burst Rate | 10fps mechanical | 6.5fps mechanical | 30fps electronic / 10fps mechanical |
| Battery Life | ~1300 shots (CIPA with OVF) | ~270 shots (CIPA) | 390 shots (CIPA) |
| Weight | 701g body only | 356g (body, battery, card) | 414g body only |
| Dimensions | 140.7 × 104.8 × 76.8mm | 116.3 × 85.5 × 68.8mm | 125.3 × 85.2 × 49.7mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | Optical pentaprism, 100% coverage, 0.95× magnification | EVF, 2.36M dots, 0.59× magnification | 0.35" OLED EVF, 2.36M dots |
| Screen | 3.0" vari-angle touchscreen | 3.0" fixed touchscreen, 1.04M dots | 3.0" fully articulating touchscreen |
| Mount | Canon EF / EF-S | Canon RF-mount | Micro Four Thirds |
| Memory Cards | Dual SD UHS-II slots | Single SD UHS-II | Single SD UHS-I |
| Connectivity | USB 2.0, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro USB, Wi-Fi, Bluetooth |
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