Lumix S1Rvs Pentax K-3 Mark III
Lumix
Lumix S1R (2019)
Starting from £2499 new
Best for High-resolution landscape, commercial & studio photography
View Lumix S1R
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?
High-Resolution Landscape, Commercial & Studio Photography — Lumix S1R (2019): A 47MP full-frame resolution powerhouse with one of the finest EVFs ever made — the S1R rewards careful, deliberate photography.
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
Lumix S1R (2019)
- Landscape photographers who want maximum resolution in a weather-sealed, IBIS-equipped full-frame body
- Commercial and product photographers who need 47MP detail with the option of 187MP composite shots
- Studio portrait photographers who want the finest EVF available alongside a high-resolution sensor
- Leica SL2 users who want a more affordable L-mount high-resolution alternative
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 lumix s1r has the highest resolution at 47mp; the pentax k-3 mark iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Lumix S1R (2019) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £2,499 | £1,699 |
| Sensor | 47.3MP full-frame CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 47.3MP | 25.7MP |
| Video | 4K/60p (crop), 4K/30p (full-frame), V-Log (upgrade) | 4K/30p, 1080p/60p |
| Autofocus | DFD contrast-detect AF — reliable for static subjects | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | 5-axis IBIS — 6 stops | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 9fps continuous with AF/AE | 12fps |
| Battery Life | ~360 shots (CIPA) | 800 shots (CIPA) |
| Weight | 898g body only | 820g body only |
| Dimensions | 148.9 × 110.0 × 96.7mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | OLED EVF, 5.76M dots, 0.78× — one of the finest EVFs available | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.2" touchscreen, tilting | 3.2" tilting touchscreen |
| Mount | L-mount (Leica/Panasonic/Sigma) | Pentax KF-mount |
| Memory Cards | Dual SD UHS-II slots | Dual SD UHS-II |
| Connectivity | USB-C, Bluetooth, Wi-Fi, 3.5mm mic & headphone jacks | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | Lumix S1R | Pentax K-3 Mark III |
|---|---|---|
| Landscape | ||
| Portrait | ||
| Vlogging & Video | ||
| Travel | ||
| Street | — | |
| Sports | — | |
| Wildlife | — | |
| Sports & Action | — |
More comparisons with Lumix S1R
Camera family history