Reasons to choose EOS 5D
Released in 2005, EOS 5D has about 852 mm² of sensor area, 12.7 MP effective resolution, and a 895 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS 5D
vs Nikon D40x
VS
Sensor area
852 mm²
EOS 5D373 mm²
D40x- Area ratio
- 2.29:1
- Absolute difference
- 479 mm²
- Relative difference
- 128.5%
The EOS 5D 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
EOS 5DMetricD40x
12.7 MPEffective pixels10.2 MP
35.8 × 23.8Sensor23.6 × 15.8
8.19 µmPixel pitch6.05 µm
67.09 µm²Pixel area36.56 µm²
1.49 MP/cm²Pixel density2.74 MP/cm²
1.01Crop factor1.52
—Maximum video—
895 gWeight522 g
CompactFlash type I, CompactFlash type II, MicrodriveStorageSDHC, Secure Digital
Lithium-Ion BP-511A rechargeable battery Li-ion batteryBatteryNikon EN-EL9 Lithium-Ion included 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 EOS 5D has the larger sensor area. The D40x has the lighter body. The EOS 5D has the higher effective resolution. The D40x is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose D40x
Released in 2007, D40x has about 373 mm² of sensor area, 10.2 MP effective resolution, and a 522 g body. Use these values to narrow the field, not as an overall image-quality score.