Pentax K-3 Mark IIIvs RX100 VI
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?
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.
Travel & Vlogging — RX100 VI (2018): The RX100 VI trades fast apertures for a remarkable 24-200mm zoom range — giving it more versatility than any previous model. 4K/30p, 24fps burst, a pop-up EVF, and an articulating screen round out an exceptional compact package. Variable aperture limits low-light performance at the long end, but for travel and events where reach matters, there is no practical alternative at this size.
Who should buy what
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
RX100 VI (2018)
- Travel photographers who need versatile reach in a pocketable body
- Vloggers and content creators who need 4K and an articulating screen
- Event photographers who want discreet, capable wide-to-tele coverage
- Wildlife and sports enthusiasts who want a compact travel option
Quick take: The pentax k-3 mark iii has the highest resolution at 26mp; the rx100 vi is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Pentax K-3 Mark III (2021) | RX100 VI (2018) |
|---|---|---|
| Price | £1,699 | £700 |
| Sensor | 25.7MP APS-C BSI CMOS (AA-filterless) | 20.1MP 1-inch BSI Stacked CMOS |
| Resolution | 25.7MP | 20.1MP |
| Video | 4K/30p, 1080p/60p | 4K/30p, 1080p/120p, 960fps HFR |
| Autofocus | SAFOX 13 phase-detect, 101-point (25 cross-type) | Fast Hybrid AF, 315 phase-detect points, Eye AF |
| Stabilisation | 5.5-stop 5-axis IBIS (Shake Reduction III) | Optical SteadyShot |
| Burst Rate | 12fps | 24fps |
| Battery Life | 800 shots (CIPA) | ~240 shots (CIPA) |
| Weight | 820g body only | 301g (with battery and card) |
| Dimensions | 134.5 × 103.5 × 73.5mm | 101.6 × 58.1 × 42.8mm |
| Weather Sealed | Yes | No |
| Viewfinder | Optical pentaprism, 100% coverage, 1.05× magnification | Pop-up EVF, 2.35M dots |
| Screen | 3.2" tilting touchscreen | 3.0" fully articulating touchscreen, 921k dots |
| Mount | Pentax KF-mount | Fixed Zeiss Vario-Sonnar T* 24-200mm f/2.8-4.5 |
| Memory Cards | Dual SD UHS-II | Single SD / Memory Stick PRO Duo slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | Micro USB, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | Pentax K-3 Mark III | RX100 VI |
|---|---|---|
| Landscape | ||
| Wildlife | ||
| Sports & Action | ||
| Portrait | ||
| Travel | ||
| Vlogging & Video | ||
| Street | — | |
| Casual | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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