Offhand, I can't think what advantage this would have over an aspheric element
(or two). The aspherics would probably be easier to control from a production
point of view, also.
Can't help thinking that the acronym is as it is for a reason...
Julian
> > In an old photo magazine (dating back to 1984) it was claimed that by
> > adopting gradient index glasses is possible to produce a 50mm lens with
> > exceptional performance adopting just two (two!) lenses. The same
> > improvements in compactness and performance, of course, should be applied
> to
> > any other focal lenght...
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