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RE: [OM] short shift question

Subject: RE: [OM] short shift question
From: Hans van Veluwen <HVeluwen@xxxxxxxxxxx>
Date: Mon, 1 May 2000 11:24:08 +0200
:Does shifting a shift lens (say the 35 Zuik) up or down by so many
:millimeters, say 10, correspond to changing the height of a 
:non-shift 35mm
:lens on a camera up or down 10mm via tripod?

No. Shifting a lens has a similar effect of using a lens with a larger angle
of view (shorter focal length) but only using part of the frame ('auto
crop'). If you take two pictures with the 35/2.8 shift with maximum shift in
both directions and stitch them, you get the equivalent of a shot taken with
a 24mm lens. One shot corresponds to a shot taken with a 24mm lens but a
part cut off. The math behind this can be found on the excellent pages of my
fellow countryman Jan Willem Markerink:
http://www.a1.nl/homepages/markerink/shifcalc.htm

He also has a page with an overview of tilt & shift lenses:
http://www.a1.nl/homepages/markerink/shiflist.htm

Note that the 35/2.8 has two different shift distances: 12mm up/down and
10mm left/right.

:Windows 9x: <win-doze-nein-ex> n.
:32  bit extensions and a graphical shell for a 16 bit patch to an 8 bit
:operating system originally coded for a 4 bit microprocessor, 
:written by a 2 bit company, that can't stand 1 bit of competition.


:)))


hnz

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