GH5vs Pentax K-3 Mark III
Pentax
Pentax K-3 Mark III (2021)
Starting from £1699 new
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
GearScore™ Verdict — Which should you buy?
Video, Filmmaking & Hybrid Shooting — GH5 (2017): The GH5 redefined what a consumer video camera could do — 4K/60p and 10-bit 4:2:2 internal recording made it the independent filmmaker's tool of choice for years.
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
GH5 (2017)
- Independent filmmakers who need 10-bit 4:2:2 internal recording without a dedicated cinema camera
- YouTube creators who want 4K/60p, a fully articulating screen, and unlimited recording
- Photographers who shoot primarily stills but need serious video capability as a second
- GH4 owners who want 4K/60p and 10-bit — a significant step up
Pentax K-3 Mark III (2021)
- DSLR photographers who want the finest APS-C optical viewfinder experience
- Outdoor and weather photographers who need robust all-weather sealing
- Pentax lens owners who want to use their existing K-mount glass
- Photographers who prefer optical viewfinders and refuse to switch to mirrorless
Quick take: The pentax k-3 mark iii has the highest resolution at 26mp; the gh5 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GH5 (2017) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £699 | £1,699 |
| Sensor | 20.3MP Micro Four Thirds Live MOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 20.3MP | 25.7MP |
| Video | 4K/60p, C4K/30p, 1080p/180p; 10-bit 4:2:2 internal; unlimited recording | 4K/30p, 1080p/60p |
| Autofocus | Contrast-detect DFD AF, face/eye detection | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | IBIS — up to 5 stops; Dual IS 2 with compatible lenses (6.5 stops) | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 12fps (AFS), 9fps (AFC) | 12fps |
| Battery Life | ~410 shots (CIPA) | 800 shots (CIPA) |
| Weight | 725g (with battery and card) | 820g body only |
| Dimensions | 138.5 × 98.1 × 87.4mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.68M dots, 0.76× magnification | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.2" fully articulating touchscreen, 1.62M dots | 3.2" tilting touchscreen |
| Mount | Micro Four Thirds | Pentax KF-mount |
| Memory Cards | Dual SD UHS-II slots | Dual SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth, 3.5mm mic, headphone jack, HDMI | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | GH5 | Pentax K-3 Mark III |
|---|---|---|
| Vlogging & Video | ||
| Travel | ||
| Portrait | ||
| Wildlife | ||
| Sports & Action | ||
| Landscape |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with GH5
Camera family history