Methods, apparatuses, and systems for scene adaptive lens shading correction. The invention accomplishes this by increasing the fluid agitation in raised regions with respect to recessed regions. The opposed cutting teeth of the cutting bars may be arranged symmetrically, asymmetrically or anti-symmetrically. Any two of the two or more diffusing layers are such that the light-source-side diffusing layer has a diffusing power lower than that of the observation-side diffusing layer. 05 to 4 L, the pressure of the vapor phase of the evaporator being 5 to 80 kPa. Each vehicle of the plurality of vehicles may include a vehicle processor supported by the at least one vehicle and shunt relays in circuit with the at least one vehicle processor.