"Mxsmanic" <mxsmanic@hotmail.com> wrote in message

news:6ev3svcum7auon4j3re1vqlqvptf7nfbf8@4ax.com...

> David Ruether writes:

> > Yes - but, I, uh, take "friendly exception" to number one above - try

> > switching to a fisheye-lens or a swing-lens and the perspectives shift

> > from (likely) rectangular to spherical or cylindrical types, which can

> > look quite different if far off axis/image-center...;-)

> You're talking about distortion, not perspective. Measure the relative

> sizes and positions of elements in the image, and you'll see that they

> do not change, even with a fish-eye lens.

I should have said "perspective types" to be clearer...;-)

This is not distortion - and sizes are most certainly

shifted off-axis in the other main perspective types

compared with the central image...

--

David Ruether

d_ruether@hotmail.com

http://www.David-Ruether-Photography.com