The BFS-U3-63S4 features Sony’s IMX178 sensor. This 6.3 MP, 1/1.8" rolling shutter CMOS device is built using Sony’s Exmor R technology. This technology increases pixel sensitivity and greatly improves picture quality in low light conditions. The IMX178’s high sensitivity earns it Sony’s STARVIS designation.
What is Exmor R
Back-illuminated pixel architecture for higher quantum efficiency
The hallmark of the Exmor R technology is a back-Illuminated pixel architecture that moves the readout circuitry from between each pixel’s microlens and photodiode to behind the photodiode layer. This gives the light entering each pixel a direct path to its light-sensitive photodiode. The result is higher quantum efficiency, since a greater percentage of photons entering each pixel are converted into charge.