Archived posting to the Leica Users Group, 2001/02/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]A lens designer always has a number of constraints preventing him/her from constructing a "perfect" lens. When one aberation is corrected, another one is introduced, or amplified. The lens that we buy represents a well balanced tradeoff between economics and performance where optical aberations have been reduced to a point where overall performance is as good as possible, limited by the price that the company feels people are willing to spend on the lens. I think that the introduction of aspherical lens elements is just another tool in the bag of the designer, allowing for simpler designs to get the same level of performance in a lens. dan c. At 01:13 PM 13-02-01 EST, KARM40@aol.com wrote: >So, it seems to me that just because a lens is aspheric, doesn't make it >better than non-aspheric. Some lenses have to be aspheric just to function >properly, or did I miss something? >Still shopping, >Mark >