Reasons to choose Alpha DSLR-A900
Released in 2008, Alpha DSLR-A900 has about 862 mm² of sensor area, 24.6 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
Sony Alpha DSLR-A900
vs Sony Alpha NEX-7
VS
Sensor area
862 mm²
Alpha DSLR-A900367 mm²
Alpha NEX-7- Area ratio
- 2.35:1
- Absolute difference
- 495 mm²
- Relative difference
- 135%
The Alpha DSLR-A900 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 3 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
Alpha DSLR-A900MetricAlpha NEX-7
24.6 MPEffective pixels24.3 MP
35.9 × 24Sensor23.5 × 15.6
5.92 µmPixel pitch3.88 µm
35.02 µm²Pixel area15.09 µm²
2.86 MP/cm²Pixel density6.63 MP/cm²
1Crop factor1.53
—Maximum video—
895 gWeight400 g
Compact Flash (Type I or II), Memory Stick Duo / Pro Duo, UDMA MStorageSD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo
Lithium-Ion NP-FM500H rechargeable battery Li-ion batteryBatteryLithium-Ion NP-FW50 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 Alpha DSLR-A900 has the larger sensor area. The Alpha NEX-7 has the lighter body. The Alpha DSLR-A900 has the higher effective resolution. The Alpha NEX-7 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Alpha NEX-7
Released in 2011, Alpha NEX-7 has about 367 mm² of sensor area, 24.3 MP effective resolution, and a 400 g body. Use these values to narrow the field, not as an overall image-quality score.