[Leica] Leica lenses on Fuji X Pro 1 Vs Sony A7

[Alan Magayne-Roshak]

On Thu, 26 Jan 2017 "Frank Filippone" <red735i at verizon.net>wrote:

>...
>...
>...
>I should mention that even with a Digi-Leica camera body, focus shifting is
>an issue.  It is inherent in the specific lens design.  There is no camera
>body based fix possible.  With a EVF,  you have the ability to correct
>it....
>Using more DOF ( smaller aperture) will help mask this error source.
>Your other choice is to not use focus shifting lenses.....  or suffer
trying
>to get really sharp focus on your subject by focusing initially at shooting
>aperture, which will be frustrating, especially at F32 ( for example).
>...
>..
>...

>Frank Filippone

>Red735i at verizon.net <Red735i at verizon.net>
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A concern with f/32, or even f/16 on FF or smaller sensors is diffraction.
I posted a picture of a toy elephant head and a Brannock Device this month.
<
http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Miscellaneous/20170108_MR_Mine_DSF3901.jpg.html
>
When I was shooting it (on a 20 lb. tripod) I was trying to get everything
in focus, but I had to settle for f/11.  I could see a softening of detail
on the focused point as I stopped down past f/8, especially at f/16 and
f/32.  The frame at f/11 was the best compromise between sharpness and
D.o.F.  FYI, the lens was a 35mm f/3.5 Perspective Control Nikkor.

Ref: <http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/cirapp.html#c1>

-- 
Alan

Alan Magayne-Roshak, Senior Photographer
University of Wisconsin-Milwaukee Photo Services
(Retired)
UPAA Photographer of the Year 1978
UPAA Master of the Profession 2014
amr3 at uwm.edu
http://gallery.leica-users.org/v/Alan+Magayne-Roshak/

"All the technique in the world doesn't compensate
 for an inability to notice. " - Elliott Erwitt