1. A camera system configured to acquire image information representative of subject matter within a selected field of view, the camera system comprising, a camera that receives reflected light and based thereon generates the image information; and a light source assembly operated in conjunction with the camera so as to provide illumination, the light source assembly including a first light source and a first tunable lens, wherein at least some of the illumination output by the light source assembly is received back at the camera as the reflected light, and wherein the tunable lens is adjustable to vary the illumination output by the light source assembly, whereby the illumination can be varied to substantially match the selected field of view.