Wildlife, Sports, Travel — Lumix G9 (2017): The G9 showed that Micro Four Thirds could compete for fast-action stills.
Landscape, Studio, Commercial — A7R IV (2019): 61MP in a mirrorless body — the resolution benchmark.
Who should buy what
Lumix G9 (2017)
A7R IV (2019)
Quick take: The a7r iv has the highest resolution at 61mp; the lumix g9 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | Lumix G9 (2017) | A7R IV (2019) |
|---|---|---|
| Price | £549 | £2,199 |
| Sensor | Micro Four Thirds Live MOS | Full-frame BSI Exmor R CMOS 35mm |
| Resolution | 20.3MP | 61.0MP |
| Video | 4K 60fps, C4K 24fps | 4K 30fps |
| Autofocus | 225-point contrast-detect DFD | 567-point phase-detect, real-time tracking |
| Stabilisation | 5-axis IBIS, 6.5 stops (6.0 stops dual IS) | 5-axis IBIS, 5.5 stops |
| Burst Rate | 20fps mechanical, 60fps electronic | 10fps |
| Battery Life | 400 shots (CIPA) | 670 shots (CIPA) |
| Weight | 658g (body only) | 665g (body only) |
| Dimensions | 136.9 × 97.3 × 91.6mm | 128.9 × 96.4 × 77.5mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.83× 3.68M-dot | EVF 0.78× 5.76M-dot |
| Screen | 3.0" fully articulating touchscreen, 1.04M-dot | 3.0" tilting touchscreen, 1.44M-dot |
| Mount | Micro Four Thirds | Sony E-Mount |
| Memory Cards | 2× SD UHS-II | 2× SD UHS-II / CFexpress Type A |
| Connectivity | Wi-Fi, Bluetooth 4.2, USB-C, HDMI full-size | Wi-Fi 5GHz, Bluetooth 4.1, USB-C 3.2 |
More comparisons with Lumix G9
Camera family history