Reasons to choose Efina
Released in 2013, Efina has about 28 mm² of sensor area, 14 MP effective resolution, and a 108 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Pentax Efina
vs Pentax Q-S1
VS
Sensor area
28 mm²
Efina42 mm²
Q-S1- Area ratio
- 1.49:1
- Absolute difference
- 14 mm²
- Relative difference
- 49.2%
The Q-S1 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
EfinaMetricQ-S1
14 MPEffective pixels12.4 MP
6.16 × 4.62Sensor7.53 × 5.64
1.43 µmPixel pitch1.85 µm
2.03 µm²Pixel area3.42 µm²
49.19 MP/cm²Pixel density29.2 MP/cm²
5.62Crop factor4.6
—Maximum video1,920 × 1,080
108 gWeight203 g
SD/SDHCStorageSD/SDHC/SDXC
Rechargeable lithium-ion battery D-LI108 Li-ion batteryBatteryRechargeable Lithium-ion Battery D-LI68 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 Q-S1 has the larger sensor area. The Efina has the lighter body. The Efina has the higher effective resolution. The Q-S1 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Q-S1
Released in 2014, Q-S1 has about 42 mm² of sensor area, 12.4 MP effective resolution, and a 203 g body. Use these values to narrow the field, not as an overall image-quality score.