M10vs 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?
Street & Documentary — M10 (2017): The M10 returned Leica to its roots — thinner, cleaner, and video-free by design. The 24MP sensor is the perfect resolution for a manual-focus rangefinder. The simplified control layout respects the M tradition without digital clutter. A camera for photographers who want to slow down and engage with every frame. One of the most satisfying cameras to use — assuming you have M-mount glass to pair with it.
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
M10 (2017)
- Serious photographers who want to slow down
- Street and documentary photographers
- Leica M-mount lens owners
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 pentax k-3 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 | M10 (2017) | Pentax K-3 Mark III (2021) |
|---|---|---|
| Price | £4,000 | £1,699 |
| Sensor | 24MP Full-Frame CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 24.0MP | 25.7MP |
| Video | — | 4K/30p, 1080p/60p |
| Autofocus | Manual focus (rangefinder coupled) | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | None | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | 5fps | 12fps |
| Battery Life | ~220 shots (CIPA) | 800 shots (CIPA) |
| Weight | 660g (with battery) | 820g body only |
| Dimensions | 139 × 80 × 38.5mm | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | No | Yes |
| Viewfinder | Optical rangefinder, 0.73× magnification | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | 3.0" fixed LCD, 1.04M dots | 3.2" tilting touchscreen |
| Mount | Leica M-mount | Pentax KF-mount |
| Memory Cards | Single SD UHS-I slot | Dual SD UHS-II |
| Connectivity | USB 2.0, Wi-Fi | USB-C, Wi-Fi, Bluetooth |
Suitability by genre
| Genre | M10 | Pentax K-3 Mark III |
|---|---|---|
| Street | — | |
| Portrait | ||
| Travel | ||
| Landscape | ||
| Astrophotography | — | |
| Vlogging & Video | ||
| Sports & Action | ||
| Wildlife |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history