On Tue, 20 Aug 2002 01:57:24 GMT, "Mxsmanic"
>"Q.G. de Bakker"
>ajrn1i$s8t$1@reader1.tiscali.nl...
>> Depends on how you use a zoom, and why.
>Changing focal length never has any effect on perspective. Perspective is
>purely a function of camera position.
Ummmm, true, within a given lens perspective type,
but changing lens perspective types, like going
from a rectangular-perspective lens to a fisheye
of about the same FL, will most certainly change
the appearance of the image...;-)
>> You could use a zoom to change perspective while
>> keeping the framing of the main subject unchanged.
>Only if you move the camera; and when you do that, the camera movement
>changes the perspective, not the zoom.
Since many zooms (and some non-zooms) have strong
barrel distortion near the short end of their ranges,
technically, zooming can change the perspective type,
and therefore the perspective in the image...;-)
Just a technicality, though...;-)