Olympus OM-D E-M5 IIIvs A7R IV
OM System
Olympus OM-D E-M5 III (2019)
Starting from £699 new
Best for Travel & lightweight outdoor photography
View Olympus OM-D E-M5 III
VS
GearScore™ Verdict — Which should you buy?
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.
Landscape, Studio, Commercial — A7R IV (2019): 61MP in a mirrorless body — the resolution benchmark.
Who should buy what
Olympus OM-D E-M5 III (2019)
- Travel photographers who want a compact, weather-sealed MFT body
- Outdoor photographers upgrading from the E-M10 who want better sealing
- Enthusiasts who want strong IBIS in a lightweight, portable system
- Photographers who want a capable travel camera that won't weigh them down
A7R IV (2019)
- Landscape photographers who print large
- Studio shooters needing maximum detail
Quick take: The a7r iv has the highest resolution at 61mp; the olympus om-d e-m5 iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Olympus OM-D E-M5 III (2019) | A7R IV (2019) |
|---|---|---|
| Price | £699 | £2,199 |
| Sensor | 20.4MP Micro Four Thirds Live MOS | Full-frame BSI Exmor R CMOS 35mm |
| Resolution | 20.4MP | 61.0MP |
| Video | 4K/30p, 1080p/120p | 4K 30fps |
| Autofocus | Hybrid phase/contrast AF with face/eye detection | 567-point phase-detect, real-time tracking |
| Stabilisation | 7.5-stop 5-axis IBIS | 5-axis IBIS, 5.5 stops |
| Burst Rate | 30fps electronic / 10fps mechanical | 10fps |
| Battery Life | 390 shots (CIPA) | 670 shots (CIPA) |
| Weight | 414g body only | 665g (body only) |
| Dimensions | 125.3 × 85.2 × 49.7mm | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | 0.35" OLED EVF, 2.36M dots | EVF 0.78× 5.76M-dot |
| Screen | 3.0" fully articulating touchscreen | 3.0" tilting touchscreen, 1.44M-dot |
| Mount | Micro Four Thirds | Sony E-Mount |
| Memory Cards | Single SD UHS-I | 2× SD UHS-II / CFexpress Type A |
| Connectivity | Micro USB, Wi-Fi, Bluetooth | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 |
Suitability by genre
| Genre | Olympus OM-D E-M5 III | A7R IV |
|---|---|---|
| Travel | — | |
| Street | — | |
| Landscape | — | |
| Portrait | — | |
| Vlogging & Video | — | |
| Sports & Action | — |
More comparisons with Olympus OM-D E-M5 III
Camera family history