1. A vehicular vision system, said vehicular vision system comprising: an imager comprising a lens and a CMOS photosensor array; wherein said photosensor array comprises a plurality of photosensor elements; wherein said imager is disposed at an interior portion of a vehicle equipped with said vehicular vision system and wherein said imager views exterior of the equipped vehicle through a windshield of the equipped vehicle and forward of the equipped vehicle; wherein at least said imager is disposed in a module attached at the windshield 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 imager; wherein said photosensor array is operable at a plurality of exposure periods; and wherein said plurality of exposure periods comprises a first exposure period and a second exposure period, and wherein the time period of exposure of said first exposure period is longer than the time period of exposure of said second exposure period.