Reasons to choose K-m
Released in 2008, K-m has about 369 mm² of sensor area, 10.2 MP effective resolution, and a 590 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Pentax K-m
vs Pentax K100D
VS
Sensor area
369 mm²
K-m369 mm²
K100D- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The K-m and K100D have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 2 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
K-mMetricK100D
10.2 MPEffective pixels6.1 MP
23.5 × 15.7Sensor23.5 × 15.7
6.01 µmPixel pitch7.78 µm
36.17 µm²Pixel area60.48 µm²
2.76 MP/cm²Pixel density1.65 MP/cm²
1.53Crop factor1.53
—Maximum video—
590 gWeight560 g
SDHC, Secure DigitalStorageSecure Digital
2 x AA Alkaline, Lithium or NiMH BatteriesBatteryAA (4) batteries (NiMH recommended)
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-m and K100D have the same sensor area. The K100D has the lighter body. The K-m has the higher effective resolution. The K-m is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose K100D
Released in 2006, K100D has about 369 mm² of sensor area, 6.1 MP effective resolution, and a 560 g body. Use these values to narrow the field, not as an overall image-quality score.