Reasons to choose K-3 II
Released in 2015, K-3 II has about 367 mm² of sensor area, 24.35 MP effective resolution, and a 799 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Pentax K-3 II
vs Pentax K-S1
VS
Sensor area
367 mm²
K-3 II367 mm²
K-S1- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The K-3 II and K-S1 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
K-3 IIMetricK-S1
24.35 MPEffective pixels20.12 MP
23.5 × 15.6Sensor23.5 × 15.6
3.88 µmPixel pitch4.27 µm
15.06 µm²Pixel area18.22 µm²
6.64 MP/cm²Pixel density5.49 MP/cm²
1.53Crop factor1.53
1,920 × 1,080Maximum video1,920 × 1,080
799 gWeight558 g
SD/SDHC/SDXC (dual card slots)StorageSD/SDHC/SDXC
Rechargeable Li-Ion battery D-LI90 Li-ion batteryBatteryRechargeable Lithium-ion Battery D-LI109 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 K-3 II and K-S1 have the same sensor area. The K-S1 has the lighter body. The K-3 II has the higher effective resolution. The K-3 II is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose K-S1
Released in 2014, K-S1 has about 367 mm² of sensor area, 20.12 MP effective resolution, and a 558 g body. Use these values to narrow the field, not as an overall image-quality score.