Archived posting to the Leica Users Group, 2012/03/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]That's 1/4 the price of the Leica lens...... Frank Filippone Red735i at earthlink.net -----Original Message----- From: lug-bounces+red735i=earthlink.net at leica-users.org [mailto:lug-bounces+red735i=earthlink.net at leica-users.org] On Behalf Of Jayanand Govindaraj Sent: Wednesday, March 28, 2012 6:50 PM To: Leica Users Group Subject: Re: [Leica] Why don't we see more large-aperture wide-angle lenses? Or 24mm f1.4 at the same price - US$2000! Cheers Jayanand On Thu, Mar 29, 2012 at 7:08 AM, Leowesson <leowesson at gmail.com> wrote: > Reasonable? 14-24 2.8. 2k. > > Leo Wesson > www.leowesson.com > > On Mar 28, 2012, at 19:08, "Frank Filippone" <red735i at earthlink.net> > wrote: > > > Nikon and Canon both sell them....at reasonable prices.... They > > must be retrofocus lenses to work on an SLR. > > > > Maybe the problem is ... reasonable prices.... > > > > Frank Filippone > > Red735i at earthlink.net > > To do a wide angle fast lens, you will need retrofocus design, even > > for rangefinder where there's no mirror box. The mostly symmetrical > > designs > like > > the Biogon do not scale to fast aperture. If I understand it > > correctly, a retrofocus would be like putting a reducer at the back > > of a longer than > wide > > angle lens, thus adding complexity. And since fast lens make the > aberration > > situation worse, further complex design is needed to control them. > > So > it's > > sort of like a double whammy. > > > > > > > > _______________________________________________ > > Leica Users Group. > > See http://leica-users.org/mailman/listinfo/lug for more information > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information