In general optical system design consists of meeting specific requirement under some set of constraints. The constraints of a system vary from application to application. Number of optical elements (lenses, mirrors, prisms, DOEs, etc.), materials, cost, size and weight. Similarly, the performance requirements of a system are application dependent and often times include the minimization of aberrations. Some aberrations may or may not be important or they may be organized into a spectrum of tolerable to intolerable aberrations. Because meeting the system constraints can cause the aberrations to worsen and, conversely, minimizing the aberrations may require breaking the constraints, the challenge lies in making the tradeoff between the two. For example, the design of a digital color imaging system which uses only plastic optical elements is a nontrivial task. While plastic is a desirable material due to its low cost, ease of manufacturing, light weight and durability, it may greatly increase the difficulty in correcting chromatic aberration.