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Hello. I was fascinated by Sony A7S photo camera low light abilities beating even Gen3 night vision devices. There are only few camera‘s capable of reaching 409,600 ISO or higher. One of them is X27 camera still in development reaching sensitivity so high that night literally looks like day. A lot of credit goes to new type backlit CMOS sensors in which photodetectors are now positioned in front thus increasing surface area to capture more light, in fact they don‘t need anymore even microlens which might block or reflect some light. They also have greater sensitivity to invisible ultraviolet and infrared spectrum. I was curious if Sony could build A7S camera with switchable IR cut filter specifically for those people interested in infrared and ultraviolet photography, as well in night photography or filming because removing this filter increases even more sensitivity of camera? Making IR visibility possible requires dissasembling camera and removing IR cut filter. That can lead to void warranty, contamination of optics and even damage. Things would be much simpler if Sony developed IR filter switch like in their older camcomders with nighshot feature.