1. A vehicular vision system, said vehicular vision system comprising: a camera comprising a lens and a CMOS photosensor array; wherein said photosensor array comprises a plurality of photosensor elements; wherein said camera is disposed at an interior portion of a vehicle equipped with said vehicular vision system; the equipped vehicle comprising a windshield; wherein said camera one of (i) views exterior of the equipped vehicle through the windshield of the equipped vehicle and forward of the equipped vehicle and (ii) views from the windshield of the equipped vehicle into the interior cabin of the equipped vehicle; a control comprising an image processor, said image processor processing image data captured by said photosensor array; wherein said image processor processes captured image data to detect an object viewed by said camera; wherein said photosensor array is operable at a plurality of exposure periods; and wherein at least one exposure period of said plurality of exposure periods is dynamically variable.