Mainstream MP Cameras With 1/2" Or Larger Sensors?

The brute force method to improving light sensistivity/image quality/noise level/low light performance/night time performance is to just use a more expensive, larger sensor.

Is any manufactuer doing this?

Would this approach not be cheaper then spending gizillions on custom DSPs/ASICs and associated algorithms? Axis has Lightfinder and Bosch has Starlight - but are the other players just going to follow suit or will some go to better sensors?

By the way, does Axis develop their own sensors? I know Samsung employs Sony Exmor units in their mainstream 2/3MP models - which about the others like Bosch, Pelco, Avigilon, etc...?

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