1. A camera for a vehicle, for monitoring an exterior environment, comprising: an imager having a plurality of pixels, the imager including a first imager region and a second imager region for different object distances; an objective situated in front of the imager; and an additional optical unit situated between the objective and the imager, imaging characteristics of the additional optical unit differing between the first and second imager regions of the imager such that a focal length differs from the first imager region to the second imager region of the imager, wherein the additional optical unit at least one of: i) is unmovable relative to the objective and the imager; and ii) includes, for each of the first and second imager regions, respective optical microelements situated between (a) the objective and (b) each pixel or a plurality of pixels of the respective imager region, a distance between the microelements situated in front of the first imager region and its respective pixels being different than a distance between the microelements situated in front of the second imager region and its respective pixels.