1. An electro-optic color imaging system for imaging a color-correlated object in at least two different color channels, the imaging system comprising: an optical subsystem that has a full width half max chromatic depth of focus ratio greater than 5 over the different color channels; a detector subsystem located at a fixed image distance from the optical subsystem, the detector subsystem capturing color channel images of the object at each of the different color channels; and a digital image processing subsystem coupled to the detector subsystem for estimating an image of the object by combining the color channel images based at least in part on an a priori estimate of the color correlation of the object.