Fujifilm X-Pro3vs OM-1 IIvs Pentax K-3 Mark III
Fujifilm
Fujifilm X-Pro3 (2019)
From £1599
Best for Street, documentary & rangefinder enthusiasts
View Fujifilm X-Pro3
Pentax
Pentax K-3 Mark III (2021)
From £1699
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
Which should you buy?
Street, Documentary & Rangefinder Enthusiasts — Fujifilm X-Pro3 (2019): The most opinionated camera Fujifilm makes — a hidden screen and hybrid OVF enforce deliberate photography, rewarding photographers who slow down.
Wildlife & Action — OM-1 II (2024): 120fps burst, 8-stop IBIS, and IP53 sealing — the most capable wildlife and action camera in the Micro Four Thirds world.
Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
Who should buy what
Fujifilm X-Pro3 (2019)
- You shoot street or documentary photography and value a minimal shooting workflow
- You want a rangefinder experience with modern digital image quality
- You love Fujifilm film simulations and prioritise stills over video
OM-1 II (2024)
- You shoot wildlife, birds, or fast action and want the best MFT autofocus available
- You need strong weather sealing without the weight of a full-frame sports body
- You're in the MFT system and want a flagship-level body upgrade
Pentax K-3 Mark III (2021)
- You're a committed DSLR photographer with significant investment in Pentax glass
- You shoot in extreme weather conditions and place build quality and reliability above everything
- You prefer optical viewfinder performance and want the best modern APS-C DSLR available
Quick take: The fujifilm x-pro3 has the highest resolution at 26mp; the om-1 ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Fujifilm X-Pro3 (2019) | OM-1 II (2024) | Pentax K-3 Mark III (2021) |
|---|---|---|---|
| Price | £1,599 | £1,499 | £1,699 |
| Sensor | 26.1MP APS-C X-Trans CMOS IV | 20.4MP Micro Four Thirds Stacked BSI CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 26.1MP | 20.4MP | 25.7MP |
| Video | 4K/30p, 1080p/120p | 4K/120p Cinema4K, Apple ProRes RAW (with recorder) | 4K/30p, 1080p/60p |
| Autofocus | Hybrid phase/contrast AF with face/eye detection | Quad-Pixel phase-detect, 1053 points, AI subject recognition (birds/animals) | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | None (lens-based only) | 5-axis IBIS, 8.0 stops (Dual IS) | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 11fps mechanical / 20fps electronic | 120fps electronic (blackout-free), 15fps mechanical | 12fps |
| Battery Life | 440 shots (CIPA) | ~520 shots (CIPA) | 800 shots (CIPA) |
| Weight | 497g body only | 561g body only | 820g body only |
| Dimensions | 140.5 × 82.8 × 46.1mm | 134.8 × 91.6 × 72.7mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes | Yes |
| Viewfinder | Hybrid OVF/EVF — 0.5" OLED, 3.69M dots | EVF, 5.76M dots, 0.83× magnification | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.0" hidden sub-LCD (opens down only) | 3.0" fully articulating touchscreen | 3.2" tilting touchscreen |
| Mount | Fujifilm X-mount | Micro Four Thirds | Pentax KF-mount |
| Memory Cards | Single SD UHS-I | Dual SD UHS-II slots | Dual SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth |
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