The Canon MS-500 promised to combine technologies in a way that had not been done before. The 3.2-megapixel SPAD sensor would deliver incredible low-light performance. It is combined with a higher resolution than had ever been produced on a SPAD sensor before and additionally uses the industry-standard B4 bayonet lens mount (based on BTA S-1005B standards), which is a widely used mount for 2/3-inch broadcast lenses that allows users to use the new camera with Canon’s large line of broadcast lenses.
“In areas with extremely high-security levels, such as seaports, public infrastructure facilities, and national borders, high-precision monitoring systems are required to surveil targets both day and night accurately. The new MS-500 camera is the world’s first ultra-high-sensitivity camera equipped with a SPAD sensor, achieving a minimum subject illumination of 0.001 lux,” Canon says.
petapixel.com 
