Archived posting to the Leica Users Group, 2019/01/16

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Subject: [Leica] Image Circles
From: rgacpa at gmail.com (Bob Adler)
Date: Wed, 16 Jan 2019 08:58:13 -0800
References: <CAAsXt4NfzLGuDrnCWxb3jeDntm962OYWgpCdFUHdxgSUa-5V=A@mail.gmail.com> <CAJ3Pgh7XNszayLfrg7yt1iyZg5Xbar-c3KGmgnJ2-P9H7h1B6A@mail.gmail.com>

I think you?re right on Paul. There is a thread on the GetDPI Medium Format 
forum that concludes exactly this with good examples...
Thanks,
Bob

Bob Adler
www.robertadlerphotography.com

> On Jan 15, 2019, at 5:51 PM, Paul Roark via LUG <lug at leica-users.org> 
> wrote:
> 
> I think it's safe to assume it will not.  Leica is not about to built the
> best, most compact lens for a "35" film/sensor size (minimum image circle
> about 44mm) that would cover the 55mm image circle you need.  All else
> being equal, the larger the circle the lower the quality/$.
> 
> Paul
> www.PaulRoark.com
> 
> On Tue, Jan 15, 2019 at 4:22 PM Robert Adler via LUG <lug at 
> leica-users.org>
> wrote:
> 
>> Hi All,
>> I need some technical help please. I'm trying to find what the size of the
>> image circle on both the 75mm f/2 ASPH and the 135mm f/3.4 ASPH. The real
>> question is will the image circles of these lens cover a sensor size of
>> 43.8mm X 32.9? Is the image circle different at f/2 than f/11?
>> Thanks for your help,
>> Bob
>> 
>> Bob Adler
>> www.robertadlerphotography.com
>> *"Capturing Light One Frame At A Time"*
>> 
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>> 
> 
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Replies: Reply from ken at iisaka.com (Ken Iisaka) ([Leica] Image Circles)
In reply to: Message from rgacpa at gmail.com (Robert Adler) ([Leica] Image Circles)
Message from roark.paul at gmail.com (Paul Roark) ([Leica] Image Circles)