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OM SYSTEM OM-3 vs Sony RX1R III
The Sony RX1R III is 26 mm narrower, 21 mm shorter and 41.7 mm deeper than the OM SYSTEM OM-3. The OM SYSTEM OM-3 takes up 16 % less space (the box around the body, without lens).
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OM SYSTEM OM-3

- Width × height × depth
- 139.3 × 88.9 × 45.8 mm (5.48 × 3.50 × 1.80 in)
- Weight
- 496 g (17.5 oz)
- Mount
- Micro Four Thirds
- Price
- $1,700 at Adorama
Sony RX1R III

- Width × height × depth
- 113.3 × 67.9 × 87.5 mm (4.46 × 2.67 × 3.44 in)
- Weight
- 498 g (17.6 oz)
- Mount
- Fixed lens
- Price
- $5,098 at Adorama
Specifications compared
| OM-3 | RX1R III | |
|---|---|---|
| Resolution | 20.4 MP | 61 MP |
| Sensor | Four Thirds | Full-frame BSI CMOS (35.7 x 23.8 mm) |
| Stabilization | Sensor-Shift | Electronic only |
| ISO | 200–25,600 | 100–32000 (50–102400 extended) |
| Shutter speed | 1/32000–60 s | 1/4000–30 s (electronic 1/8000) |
| Burst | Up to 120 fps | 5 fps |
| Video | 4K internal | 4K 30p 10-bit 4:2:2 |
| Viewfinder | Electronic (OLED) · 2,360,000 Dot · 1.23x | 2.36M-dot OLED, 0.70x |
| Screen | Articulating 3" Touchscreen LCD | 3.0" 2.36M-dot fixed touch |
| Card slots | Single Slot: SD/SDHC/SDXC (UHS-II) | 1x SD UHS-II |
| Battery | BLX-1 | NP-FW50, about 300 shots (CIPA) |
| Dimensions | 139.3 x 88.9 x 45.8 mm | 113.3 x 67.9 x 87.5 mm |
| Weight | 496 g with battery & card | 498 g |
| Autofocus | 1053-point cross-type hybrid AF, subject detection | 693-point hybrid AF, subject detection |
| Lens | – | 35mm F2 (35mm equivalent), built in |
Values that differ are in bold. From the makers' published specifications.
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