Reasons to choose Alpha 7R
Released in 2013, Alpha 7R has about 862 mm² of sensor area, 36.4 MP effective resolution, and a 465 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Sony Alpha 7R
vs Sony Alpha SLT-A99
VS
Sensor area
862 mm²
Alpha 7R852 mm²
Alpha SLT-A99- Area ratio
- 1.01:1
- Absolute difference
- 10 mm²
- Relative difference
- 1.1%
The Alpha 7R 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 1 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
Alpha 7RMetricAlpha SLT-A99
36.4 MPEffective pixels24.3 MP
35.9 × 24Sensor35.8 × 23.8
4.87 µmPixel pitch5.92 µm
23.67 µm²Pixel area35.06 µm²
4.22 MP/cm²Pixel density2.85 MP/cm²
1Crop factor1.01
—Maximum video—
465 gWeight812 g
SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG DuoStorageMemory Stick PRO Duo/Pro-HG Duo; SD, SDHC and SDXC
NP-FW50 lithium-ion battery Li-ion batteryBatteryLithium-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 7R has the larger sensor area. The Alpha 7R has the lighter body. The Alpha 7R has the higher effective resolution. The Alpha 7R 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.