GFX 50S IIvs Lumix G9 IIvs Pentax K-3 Mark III
Lumix
Lumix G9 II (2023)
From £1499
Best for Wildlife, sports & hybrid MFT shooters
View Lumix G9 II
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?
Studio & Portrait Specialists — GFX 50S II (2021): Medium format quality at the most accessible price ever — 51MP detail and tonal richness no APS-C or full-frame body can replicate.
Wildlife, Sports & Hybrid Mft Shooters — Lumix G9 II (2023): Phase-detect AF transforms the G9 II into a genuine MFT all-rounder — the best Lumix MFT camera for both stills and video.
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
GFX 50S II (2021)
- You want to experience medium format without a five-figure investment
- You shoot landscape, architecture, or portraits where resolution and tonal depth matter
- You're in the Fujifilm ecosystem and want to step up to a larger sensor
Lumix G9 II (2023)
- You want the best Micro Four Thirds camera for both stills and video
- You shoot wildlife, sports, or documentary and value the compact, lightweight MFT system
- You're invested in the MFT lens ecosystem and want the top-tier body to go with it
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 gfx 50s ii has the highest resolution at 51mp; the lumix g9 ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | Lumix G9 II (2023) | Pentax K-3 Mark III (2021) |
|---|---|---|---|
| Price | £2,999 | £1,499 | £1,699 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 25.2MP Micro Four Thirds Live MOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 51.4MP | 25.2MP | 25.7MP |
| Video | 4K/30p (cropped) | 5.8K/30p, 4K/120p, C4K/60p, V-Log | 4K/30p, 1080p/60p |
| Autofocus | Phase-detect, 425 points | Phase-detect AF with subject/face/eye detection | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | 5-axis IBIS, 6.5 stops | 8-stop IBIS (with OIS lenses) | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 3fps | 25fps with AF / 75fps electronic (fixed focus) | 12fps |
| Battery Life | ~440 shots (CIPA) | 680 shots (CIPA) | 800 shots (CIPA) |
| Weight | 900g body only | 658g body only | 820g body only |
| Dimensions | 150.0 × 104.2 × 87.2mm | 134.3 × 100.3 × 90.5mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | 0.76" OLED EVF, 3.68M dots | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.2" tilting touchscreen | 3.0" fully articulating touchscreen | 3.2" tilting touchscreen |
| Mount | Fujifilm G-mount (medium format) | Micro Four Thirds | Pentax KF-mount |
| Memory Cards | Dual SD UHS-II slots | Dual SD UHS-II | Dual SD UHS-II |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C 3.1, HDMI full-size, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
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