[Leica] Image Circles

[rgacpa at gmail.com (Robert Adler)]

Very nice!

Bob Adler
www.robertadlerphotography.com
*"Capturing Light One Frame At A Time"*


On Wed, Jan 16, 2019 at 11:21 AM Paul Roark via LUG <lug at leica-users.org>
wrote:

> On Wed, Jan 16, 2019 at 9:38 AM Ken Iisaka <ken at iisaka.com> wrote:
>
> > ...
> >
> > The biggest constraint is the diameter of the mount which is pretty
> small.
> > If the position of the exit pupil is close to the mount, you may not
> > experience vignetting due to the mount...
>
>
> The exit pupil is about 30mm away from the mount face.
>
> BTW, to see what this lens can do in terms of our moon and the moons of
> Jupiter, see http://www.paulroark.com/SYV-Skies.html.  The first image is
> with the 135.  The first link under the first image is an enlargement of
> Jupiter's moons from the top image and the 135.  (The second link -- our
> moon by itself -- in not the Leica; it's the Canon 70-200 f/4 L zoom.)
>
> Paul
> www.PaulRoark.com
>
>
>
>
> >
> > On Wed, Jan 16, 2019 at 08:58 Bob Adler via LUG <lug at leica-users.org>
> > wrote:
> >
> > > 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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