Reasons to choose Alpha 7S
Released in 2014, Alpha 7S has about 847 mm² of sensor area, 12.2 MP effective resolution, and a 489 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Sony Alpha 7S
vs Sony Alpha SLT-A99
VS
Sensor area
847 mm²
Alpha 7S852 mm²
Alpha SLT-A99- Area ratio
- 1.01:1
- Absolute difference
- 5 mm²
- Relative difference
- 0.6%
The Alpha SLT-A99 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
Alpha 7SMetricAlpha SLT-A99
12.2 MPEffective pixels24.3 MP
35.6 × 23.8Sensor35.8 × 23.8
8.33 µmPixel pitch5.92 µm
69.45 µm²Pixel area35.06 µm²
1.44 MP/cm²Pixel density2.85 MP/cm²
1.01Crop factor1.01
1,920 × 1,080Maximum video—
489 gWeight812 g
SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG DuoStorageMemory Stick PRO Duo/Pro-HG Duo; SD, SDHC and SDXC
Rechargeable battery pack NP-FW50BatteryLithium-Ion NP-FM500H 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 SLT-A99 has the larger sensor area. The Alpha 7S has the lighter body. The Alpha SLT-A99 has the higher effective resolution. The Alpha 7S is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Alpha SLT-A99
Released in 2012, Alpha SLT-A99 has about 852 mm² of sensor area, 24.3 MP effective resolution, and a 812 g body. Use these values to narrow the field, not as an overall image-quality score.