Archived posting to the Leica Users Group, 2012/03/28

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Subject: [Leica] Why don't we see more large-aperture wide-angle lenses?
From: red735i at earthlink.net (Frank Filippone)
Date: Wed, 28 Mar 2012 21:32:29 -0700
References: <E79E94CF-54D6-4134-B7AB-3270E4F5F9D0@mac.com> <CAF8hL-EA=RQQqkTx2KBAeTueFAs6Rbzs9sY7RvCj59VnFw8tEw@mail.gmail.com> <015501cd0d40$0a9298e0$1fb7caa0$@earthlink.net> <0F875B55-15BD-4F21-ACE8-6989AB32465C@gmail.com> <CAH1UNJ2wHJtoPoLsaTg=EpW3iJTtVbZ+f3NbVFmrhtQGTwgGHw@mail.gmail.com>

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
>

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In reply to: Message from abridge at mac.com (Adam Bridge) ([Leica] Why don't we see more large-aperture wide-angle lenses?)
Message from richard at richardmanphoto.com (Richard Man) ([Leica] Why don't we see more large-aperture wide-angle lenses?)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] Why don't we see more large-aperture wide-angle lenses?)
Message from leowesson at gmail.com (Leowesson) ([Leica] Why don't we see more large-aperture wide-angle lenses?)
Message from jayanand at gmail.com (Jayanand Govindaraj) ([Leica] Why don't we see more large-aperture wide-angle lenses?)