Bob wrote:
Some things we understand and don't think about. Like why in movies
with a car chase shot with a long lens the cars never get closer, just
bigger...... Telephoto compression......
A long time ago when I first started in photgraphy I had an Olympus
OM-1md. The Instruction book, as I remember, had an excellant
section on what you just said. One series of photos showed the
subject with various focal lengths keeping the the camera in the same
position. The next section showed the various focal lengths keping
the subject the same size. I still have my OM-1md, maybe I can find
the manual. And when Vivitar was big one of their brochures had
similar photos. I'll have to see if I can find that tto and review
what I had forgotten.
And such photos should make *very* clear that there's no such thing as
"telephoto compression". Perspective depends entirely and solely on the
physical location of the camera, the lens focal length does *not* change
that. Crop the relevant portion out of the 24mm shot and compare it
with the 200mm shot taken from the same location and the perspective is
the same, there is no "telephoto compression".
(Sorry, I've seen several people use that phrase here just recently, and
it's just plain *wrong* in attributing the perspective effects to the
lens used.)
--
David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/dd-b
Pics: http://dd-b.net/dd-b/SnapshotAlbum, http://dd-b.net/photography/gallery
Dragaera: http://dragaera.info
