[Leica] Leica 24-90 SL lens question

[Aram Langhans]

Thanks, Bob.  I use the live view in Nikon now.  It is a PITA.  Try to find 
a star, then focus with a loupe.   Then if I change focal length  I have to 
do it all over again.

I have no problem with hard stop infinity on the R 35-70/4.  The stars are 
perfectly sharp wide open.  Much more so than with either of my Nikon zooms 
focused as stated above.  Wide open they are no match for the R lens.  And I 
can zoom with impunity.  But I most often need something wider than 35mm 
than on the longer side.

Aram

-----Original Message----- 
From: Robert Adler
Sent: Tuesday, December 01, 2015 3:55 PM
To: Leica Users Group
Subject: Re: [Leica] Leica 24-90 SL lens question

Hi Aram,

For astro landscape photography, you will not want to depend on the lens'
hard stop at infinity with such a terrific EVF: just use the EVF and manual
focus to make the stars sharp.
With the M's you don't have a choice but to depend on the hard stop. On
other camera's with a good EVF or LCD (use a loupe) it's best to see your
focus on the stars.
Hope this helps chip away at spending all your $ on the SL.   I certainly
am considering it except that for my WA lenses don't play well with it. So
in addition to the SL I would need a 35/1,4 ASPH and a 21/1,4 ASPH. Add
that to the autofocus 24-90 and basically I am SOL!
:-)
Best,
Bob



On Tue, Dec 1, 2015 at 1:10 PM, Aram Langhans <leica_r8 at hotmail.com> wrote:

> Tina and anyone else with this new camera.  I have a question.  Does this
> lens have a hard stop at infinity or does it focus past infinity in manual
> mode?  I am thinking of night astrophotography.  My35-70/4 has a hard 
> focus
> at infinity.  I just turn till it stops and I am all set, no matter what
> focal length I am using.  Not so on my Nikon AF lenses.  Not sure it this
> is the way a lens has to be designed for AF, or if it is just cheaper to 
> do
> so.
>
> Also, in manual focus,  if you focus on an object at 90mm, does the focus
> change as you zoom out to 24?  In other words, does the focus change as 
> you
> move through the zoom range?  Again, the 35-70/4 does not change focus as
> you zoom, but all my Nikon zooms do.  The 16-36/4, the 24-120/4 and the
> 70-200/4.  The worst offender is the 24-120.  My love to hate lens. Again,
> I am thinking of astrophotography.  If the 24-90 SL lens does not have a
> hard infinity,  I would like to be able to focus once on a star then not
> have to refocus if you change the focal length.  Hard infinity would be
> best, but this would also work after the initial focusing.
>
> I looked at the review by Dowling.  I really need to stop looking.  It
> really makes me want one  in spite of the size.  It looks like a very
> impressive camera with a great viewfinder, the thing I really dislike 
> about
> the other mirrorless cameras.  But I know I should not spend that much
> money, if I had it, and just enjoy what I have now for a while.
>
> Thanks.
>
> Aram
>
> Aram Langhans
> (Semi) Retired  Science Teacher
> & Unemployed photographer
>
> “The Human Genome Project has proved Darwin more right than Darwin himself
> would ever have dared dream.”   James D. Watson
>
>
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-- 
Bob Adler
www.robertadlerphotography.com