Reasons to choose D800E
Released in 2012, D800E has about 862 mm² of sensor area, 36.3 MP effective resolution, and a 900 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Nikon D800E
vs Pentax 645D
VS
Sensor area
862 mm²
D800E1,452 mm²
645D- Area ratio
- 1.69:1
- Absolute difference
- 590 mm²
- Relative difference
- 68.5%
The 645D 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 2 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
D800EMetric645D
36.3 MPEffective pixels40 MP
35.9 × 24Sensor44 × 33
4.87 µmPixel pitch6.02 µm
23.74 µm²Pixel area36.3 µm²
4.21 MP/cm²Pixel density2.75 MP/cm²
1Crop factor0.79
1,920 × 1,080Maximum video—
900 gWeight1,400 g
CompactFlash type I, SDHC, SDXC, Secure DigitalStorageSDHC, Secure Digital
Lithium-Ion EN-EL15 rechargeable battery Li-ion batteryBatteryLithium-Ion D-LI90 rechargeable 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 645D has the larger sensor area. The D800E has the lighter body. The 645D has the higher effective resolution. The D800E is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose 645D
Released in 2010, 645D has about 1,452 mm² of sensor area, 40 MP effective resolution, and a 1,400 g body. Use these values to narrow the field, not as an overall image-quality score.