Archived posting to the Leica Users Group, 1998/05/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>then why are there no short focal >length apocromats, e.g. under 100mm in 35mm format? Becaue it really only works for lenses generally about 100mm and longer. The error between the two primary colors and the third one that's a bit off is so small at moderate and wide focal lengths it's not a problem. Other aberrations are more important to correct. But there is a 90mm APO Summicron M coming, so at least 90mm seems to be working. ========= Eric Welch LUG Nut (via BeOS) http://www.ponyexpress.net/~ewelch