M10vs A7R IV
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.
Landscape, Studio, Commercial — A7R IV (2019): 61MP in a mirrorless body — the resolution benchmark.
Who should buy what
M10 (2017)
- Serious photographers who want to slow down
- Street and documentary photographers
- Leica M-mount lens owners
A7R IV (2019)
- Landscape photographers who print large
- Studio shooters needing maximum detail
Quick take: The a7r iv has the highest resolution at 61mp; the a7r iv is the most affordable; only the a7r iv is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | M10 (2017) | A7R IV (2019) |
|---|---|---|
| Price | £4,000 | £2,199 |
| Sensor | 24MP Full-Frame CMOS | Full-frame BSI Exmor R CMOS 35mm |
| Resolution | 24.0MP | 61.0MP |
| Video | — | 4K 30fps |
| Autofocus | Manual focus (rangefinder coupled) | 567-point phase-detect, real-time tracking |
| Stabilisation | None | 5-axis IBIS, 5.5 stops |
| Burst Rate | 5fps | 10fps |
| Battery Life | ~220 shots (CIPA) | 670 shots (CIPA) |
| Weight | 660g (with battery) | 665g (body only) |
| Dimensions | 139 × 80 × 38.5mm | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | No | Yes |
| Viewfinder | Optical rangefinder, 0.73× magnification | EVF 0.78× 5.76M-dot |
| Screen | 3.0" fixed LCD, 1.04M dots | 3.0" tilting touchscreen, 1.44M-dot |
| Mount | Leica M-mount | Sony E-Mount |
| Memory Cards | Single SD UHS-I slot | 2× SD UHS-II / CFexpress Type A |
| Connectivity | USB 2.0, Wi-Fi | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 |
Suitability by genre
| Genre | M10 | A7R IV |
|---|---|---|
| Street | ||
| Portrait | ||
| Travel | ||
| Landscape | ||
| Astrophotography | — | |
| Vlogging & Video | ||
| Sports & Action | — | |
| Wildlife | ||
| Architecture | — | |
| Wedding & Events | — |
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