1. A device for obtaining images, said device comprising: an imaging subsystem comprising an image sensor array and an imaging assembly operative for focusing an image onto said image sensor array; a housing incorporating said imaging subsystem; wherein said device is adapted to acquire a first plurality of images based on a first control parameter in which said first control parameter for a subsequent image of said first plurality of images is adjusted based on a prior image of said first plurality of images, and adapted to acquire a second plurality of images based on a second control parameter in which said second control parameter for a subsequent image of said second plurality of images is adjusted based on a prior image of said second plurality of images, adjustment of said first control parameter being determined differently compared to adjustment of said second control parameter; and wherein acquisition of said first plurality of images being interspersed with and obtained generally concurrently with acquisition of said second plurality of images, and acquisition of said first plurality of images and adjustment of said first control parameter being separate from acquisition of said second plurality of images and adjustment of said second control parameter.