Reasons to choose SL3-S
Released in 2025, SL3-S has about 864 mm² of sensor area, 24.6 MP effective resolution, and a 768 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Leica SL3-S
vs Sigma BF
VS
Sensor area
864 mm²
SL3-S858 mm²
BF- Area ratio
- 1.01:1
- Absolute difference
- 6 mm²
- Relative difference
- 0.7%
The SL3-S has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
Key specification differences
SL3-SMetricBF
24.6 MPEffective pixels24.6 MP
36 × 24Sensor35.9 × 23.9
5.93 µmPixel pitch5.91 µm
35.12 µm²Pixel area34.88 µm²
2.85 MP/cm²Pixel density2.87 MP/cm²
1Crop factor1
5,952 × 3,968Maximum video6,016 × 3,384
768 gWeight446 g
SD/SDHC/SDXC (UHS-II), CFexpress Type BStorageInternal storage
BP-SCL6 Lithium-Ion battery Li-ion batteryBatteryBP-81 Lithium-Ion battery Li-ion battery
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
How to choose between these cameras
The SL3-S has the larger sensor area. The BF has the lighter body. The SL3-S and BF have the same effective resolution. The SL3-S and BF were both released in 2025. Also consider the lens system and subjects you shoot.
Reasons to choose BF
Released in 2025, BF has about 858 mm² of sensor area, 24.6 MP effective resolution, and a 446 g body. Use these values to narrow the field, not as an overall image-quality score.