Archived posting to the Leica Users Group, 2012/02/04

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Pano stitch test: Sunset light
From: roark.paul at (Paul Roark)
Date: Sat, 4 Feb 2012 09:04:02 -0800
References: <> <> <>


Very nice shot.

One reason I've been experimenting with the very wide angle lenses is
that they allow me to keep the center of the lens at the horizon
(really helps with stitching) but crop the final such that the horizon
is not in the center.

> Now I want to combine it with focus stacking and Scheimpflug is your uncle.

This is where the parallax issue comes in and you are much better off
with the rotation point being at the lens nodal point.  There is a
point at which this becomes rather overwhelming, and you'll wish you'd
carried a Canon with it's 24mm Tilt Shift (version 2 only - version 1
was a dog).  (Personally, I leave the too-heavy cannon at home and go
with a non-stitched, very-wide focus stack to get the near-far

I used a Rollei SL66 for years, due in no small part to it's built-in
tilt.  A huge disappointment with it, however, was the close corner
performance of the 50mm Distagon.  All retrofocus optics I've used and
tested show the same problem of sensitivity to focus.  The ZM optics
are no exceptions.  See the comparison of the 18mm ZM Distagon
(retrofocus) and 21mm C-Biogon (relatively symmetrical) at .
This appears to be typical.  (I have never tested the Leica 18mm.)  I
suspect that floating elements are the best and maybe only cure for
the focus sensitivity of non-symmetrical designs.


Replies: Reply from mark at (Mark Rabiner) ([Leica] Pano stitch test: Sunset light)
In reply to: Message from richard at (Richard Man) ([Leica] Pano stitch test: Sunset light)
Message from rgacpa at (Robert Adler) ([Leica] Pano stitch test: Sunset light)
Message from richard at (Richard Man) ([Leica] Pano stitch test: Sunset light)