X-E4vs Olympus OM-D E-M5 IIIvs Sigma fp
OM System
Olympus OM-D E-M5 III (2019)
From £699
Best for Travel & lightweight outdoor photography
View Olympus OM-D E-M5 III
Sigma
Sigma fp (2019)
From £1499
Best for Creative filmmakers & experimental photographers
View Sigma fp
Which should you buy?
Compact Street & Travel Photography — X-E4 (2021): The X-E4 is for photographers who want the minimum camera that still delivers maximum image quality. If you love shooting from the rear screen and want the smallest possible X-mount body, this is your camera. If you need a viewfinder or IBIS, look at the X-S20 or X-T30 II.
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.
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
X-E4 (2021)
- Street photographers who prioritise portability and discretion
- Travel photographers packing minimally
- Fujifilm fans who shoot primarily from the rear screen
- Anyone who wants the X-Trans sensor in the smallest possible body
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
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 x-e4 has the highest resolution at 26mp; the x-e4 is the most affordable; only the olympus om-d e-m5 iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | X-E4 (2021) | Olympus OM-D E-M5 III (2019) | Sigma fp (2019) |
|---|---|---|---|
| Price | £699 | £699 | £1,499 |
| Sensor | 26.1MP APS-C X-Trans CMOS IV | 20.4MP Micro Four Thirds Live MOS | 24.6MP full-frame Bayer CMOS |
| Resolution | 26.1MP | 20.4MP | 24.6MP |
| Video | 4K/30p, 1080p/240p slow-motion, F-Log | 4K/30p, 1080p/120p | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p |
| Autofocus | Phase-detect, 425 points, face/Eye detection | Hybrid phase/contrast AF with face/eye detection | Contrast-detect AF with face/eye detection |
| Stabilisation | None (no IBIS) | 7.5-stop 5-axis IBIS | None (lens-based only) |
| Burst Rate | 8fps mechanical, 20fps electronic | 30fps electronic / 10fps mechanical | 18fps electronic |
| Battery Life | ~460 shots (CIPA) | 390 shots (CIPA) | 200 shots (CIPA) |
| Weight | 364g (body only) | 414g body only | 422g body only |
| Dimensions | 121.3 × 72.9 × 32.7mm | 125.3 × 85.2 × 49.7mm | 112.6 × 69.9 × 45.3mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | None — rear screen only (EVF accessory available) | 0.35" OLED EVF, 2.36M dots | None |
| Screen | 3.0" fixed touchscreen, 1.62M dots | 3.0" fully articulating touchscreen | 3.15" fixed touchscreen |
| Mount | Fujifilm X-mount | Micro Four Thirds | Leica L-mount |
| Memory Cards | Single SD UHS-I | Single SD UHS-I | Single SD UHS-II + CFexpress Type B (via adapter) |
| Connectivity | USB-C, Bluetooth, Wi-Fi | Micro USB, Wi-Fi, Bluetooth | USB-C 3.1, Wi-Fi, Bluetooth |
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