GFX 50S IIvs Nikon Z8vs Pentax K-3 Mark III
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.
Sports, Wildlife & Hybrid Professionals — Nikon Z8 (2023): Z9 performance in a compact body — 45MP, 8K/60p RAW, and 20fps burst without the bulk or price of the flagship.
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
Nikon Z8 (2023)
- You need Z9-level performance in a more travel-friendly and portable body
- You shoot wildlife, weddings, or sport and need exceptional resolution with speed
- You want the best Nikon mirrorless body available without carrying the full Z9
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 pentax k-3 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | Nikon Z8 (2023) | Pentax K-3 Mark III (2021) |
|---|---|---|---|
| Price | £2,999 | £3,999 | £1,699 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 45.7MP full-frame BSI stacked CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 51.4MP | 45.7MP | 25.7MP |
| Video | 4K/30p (cropped) | 8K/60p RAW, 4K/120p, ProRes RAW | 4K/30p, 1080p/60p |
| Autofocus | Phase-detect, 425 points | Subject detection AF, 493-point phase-detect | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | 5-axis IBIS, 6.5 stops | 6-stop IBIS | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 3fps | 20fps RAW / 120fps JPEG | 12fps |
| Battery Life | ~440 shots (CIPA) | 330 shots (CIPA) | 800 shots (CIPA) |
| Weight | 900g body only | 910g body only | 820g body only |
| Dimensions | 150.0 × 104.2 × 87.2mm | 144.0 × 118.5 × 83.0mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | 0.5" Quad-VGA OLED EVF, 3.69M dots, 120fps | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.2" tilting touchscreen | 3.2" tilting touchscreen | 3.2" tilting touchscreen |
| Mount | Fujifilm G-mount (medium format) | Nikon Z-mount | Pentax KF-mount |
| Memory Cards | Dual SD UHS-II slots | Dual CFexpress Type B / XQD | Dual SD UHS-II |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C 3.2, HDMI full-size, Wi-Fi 6, Bluetooth | USB-C, Wi-Fi, Bluetooth |
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