[OM] Re: 35mm f2.8 Shift

Subject: [OM] Re: 35mm f2.8 Shift
From: Tim Hughes <timhughes@xxxxxxxx>
Date: Tue, 7 Mar 2006 10:47:06 -0800 (PST)
Cc: agschnozz@xxxxxxxxx
One might guess the lens is more tele-centric than most just because it has to 
sit further away
from "film" plane to allow space for shift mechanism and it has a large exit 
pupil for shifting.
But shifted the rays by definition are not telecentric, so it would be 
interesting to look at the
light dropp off shifted when photographing a white wall say. Nice that you can 
actually do the
"densitometry" in PS to test this. 

Anybody want to do the test?
Just fix the exposure for unshifted and use the same exposure for shifted.
You could also break out each color and see how much difference there is, if 
any, in the pixel
vigneting from the color filters. 

Tim Hughes

--- AG Schnozz <agschnozz@xxxxxxxxx> wrote:

> > If you take pictures of things, you'll probably love the lens.
> > If you take pictures of people, you probably won't find much
> > value.
> I'm using a loaner 35/shift on the E-1 and it makes for a good
> pano-stitching lens.  I recommend five shot for a horizontal. 
> You'll need to trim the extreme ends off, due to the blurries,
> but suprisingly enough the non-telecentric nature of the lens
> doesn't seem to choke the E-1's sensor too bad.
> AG
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