Archived posting to the Leica Users Group, 2000/08/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On 22 Aug 2000, at 23:25, Dante A Stella wrote: > You must have missed Erwin Puts' commentary on this. He thinks that retrofocus > lenses have far greater aberration-correction potential than symmetrical lenses > do. And Zeiss managed to produce one of the worlds lowest linear distortion ultra- wide angle lenses, the Hologon, using a virtually symmetrical design. Coma is near non-existent in this design as well. No retrofocus ultra-wide that I have used or owned comes close to its performance, discounting speed and natural vignetting (which is readily corrected) of course. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 Fax +61-2-9554-9259 UTC(GMT) +10 Hours audiob@ozemail.com.au http://www.ozemail.com.au/~distudio/publications.html