PowerShot G7X Mark IIIvs Pentax K-3 Mark III
Canon
PowerShot G7X Mark III (2019)
Starting from £749 new
Best for Vlogging, content creation & travel video
View PowerShot G7X 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?
Vlogging, Content Creation & Travel Video — PowerShot G7X Mark III (2019): The finest vlogging compact available — pocket-sized 4K, a flip screen, mic input, and USB live streaming in one remarkably capable package.
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
PowerShot G7X Mark III (2019)
- Vloggers and content creators who need 4K video, a flip screen, and a mic input in a pocket-sized camera
- Travellers who want the best possible compact video quality without carrying an interchangeable-lens system
- Live streamers who want USB streaming capability built into a compact camera
- Smartphone upgraders who want significantly better video quality in something nearly as pocketable
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 powershot g7x mark iii is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | PowerShot G7X Mark III (2019) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £749 | £1,699 |
| Sensor | 20.1MP 1-inch BSI-CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 20.1MP | 25.7MP |
| Video | 4K/30p, 1080p/120p — no crop in 4K | 4K/30p, 1080p/60p |
| Autofocus | Dual Pixel CMOS AF — fast, reliable, with Eye AF | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | Optical IS — lens-based | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 20fps (with fixed AF/AE) | 12fps |
| Battery Life | ~235 shots (CIPA) | 800 shots (CIPA) |
| Weight | 304g | 820g body only |
| Dimensions | 105.5 × 60.9 × 41.4mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | No | Yes |
| Viewfinder | None | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.0" fully tilting touchscreen (180° flip for self-facing) | 3.2" tilting touchscreen |
| Mount | Fixed 24-100mm equivalent f/1.8-2.8 lens | Pentax KF-mount |
| Memory Cards | Single SD UHS-I slot | Dual SD UHS-II |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic jack, USB live streaming | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | PowerShot G7X Mark III | Pentax K-3 Mark III |
|---|---|---|
| Vlogging & Video | ||
| Travel | ||
| Street | — | |
| Portrait | ||
| Landscape | ||
| Sports | — | |
| Wildlife | — | |
| Sports & Action | — |
More comparisons with PowerShot G7X Mark III