Reasons to choose EOS 20Da
Released in 2005, EOS 20Da has about 338 mm² of sensor area, 8.2 MP effective resolution, and a 770 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Canon EOS 20Da
vs Nikon D40x
VS
Sensor area
338 mm²
EOS 20Da373 mm²
D40x- Area ratio
- 1.1:1
- Absolute difference
- 35 mm²
- Relative difference
- 10.5%
The D40x 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 20DaMetricD40x
8.2 MPEffective pixels10.2 MP
22.5 × 15Sensor23.6 × 15.8
6.42 µmPixel pitch6.05 µm
41.16 µm²Pixel area36.56 µm²
2.43 MP/cm²Pixel density2.74 MP/cm²
1.6Crop factor1.52
—Maximum video—
770 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 D40x has the larger sensor area. The D40x has the lighter body. The D40x 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.