The advent of the Advanced Photo System has led to more stringent requirements for high-performance photographic zoom lenses due to the increased enlarger magnification needed to form equivalent size prints from the smaller Kodak Advantix film negatives. Additionally, the trend towards more compact cameras that are easier to carry has reduced the space envelope alotted to the lens in NSLR cameras. Several novel designs that utilize the advantages of glass and plastic molded aspheres to achieve high performance, while maintaining a compact form factor, will be discussed.
Matthew T. ChangRobert R. Shannon