Another ability that hasn't been mentioned yet is that using a shift lens on
a tripod will let you make 'panoramic' images. A full-left shifted image and
another full-right shifted image will use the whole image circle area,
resulting in a pair of negatives/slides that will scan and merge perfectly.
In effect you have a 24mm x 47mm (for the 35-Shift) or 24mm x 58mm (for the
24-Shift) image. This is similar to what the H*ssleblad Xpan camera does,
but the lenses cost less...
--
Jim Brokaw
OM-'s of all sorts, and no OM-oney...
on 9/5/03 10:27 PM, John A. Lind at jlind@xxxxxxxxxxxx wrote:
> As to shift lenses . . . they are often called "PC" or "perspective
> correcting" lenses. One of the most common uses is with architectural
> objects although they have other applications. The image circle projected
> onto the film plane is considerably larger than the film gate. This allows
> moving the lens on its mount . . . up/down and left/right . . . to decide
> what part of the image circle will be photographed. In the classic
> application for photographing a tall building, it allows keeping the film
> plane parallel to the face of the building and by shifting upward one can
> get rid of foreground clutter at the bottom and get the top of the building
> into the image. If you have ever seen what happens when someone aims a
> camera slightly upward to fit a tall building into a photograph, it looks
> as if it's falling backward. This type of lens can be used to eliminate
> that effect. For more on it with some examples, see the excellent
> discussion about shift lenses on this web page:
> http://www.photo.net/photo/canon/tilt-shift
>
> BTW, you can also use one to create dyptychs and tryptychs . . . and you
> can use the 35/2.8 Shift with a 2X-A to make a 70/5.6 Shift. Using one
> with a TC magnifies the amount of shift (with a 2X TC, the shift is 2X).
>
> -- John
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