Lens Distortion Fisheye HELP

Archived from groups: rec.photo.digital (More info?)

I am shooting using a fisheye lens (century optics 3x fisheye)
with my sony trv900.

It works but i would like to know if i add distance to the fisheye
lens
to the CCD sensors (In the form of an ring adaptor) what would happen
?

A) Would i retain the same magnitude of fisheye effect with edge
clipping
of what would be the edge without the ring adaptor ?

B) Or would i see a reduced fisheye effect since the lens is further
away
from the CCD sensor.

I am hoping that i see a reduced amount of fisheye.

Currently i have manually at first then using automated script
gotten photoshop to dewarp my images. This process is pain stakingly
SLOW.

If that doesnt work would another fisheye lens that gives me a
slightly
reduced field of horizontal view work ?

My problem is that my lens currently gives me about 125 degree field
of view
and i dewarp to what i believe is close to 115 degress field of view.
I am unable to find a fish eye that gives me a natural 115 degree
field of view which im hoping would be good enough for me not to have
to dewarp.


Any help would be greatly welcome

Tim Bernard.

Archived from groups: rec.photo.digital (More info?)

"dude" <virtual_media_solutions@hotmail.com> wrote in message
news:6f2a31a2.0412061942.74d83a54@posting.google.com...

> It works but i would like to know if i add distance to the fisheye
> lens
> to the CCD sensors (In the form of an ring adaptor) what would happen
> ?

Try holding it farther out, and see.

> B) Or would i see a reduced fisheye effect since the lens is further
> away
> from the CCD sensor.

Probably an increased fisheye effect.


> I am unable to find a fish eye that gives me a natural 115 degree
> field of view which im hoping would be good enough for me not to have
> to dewarp.

"Fisheye" means "warped image." For lenses with straight lines, you want a
wide-angle lens, not a fisheye lens. I have no idea whether such extreme
wide-angle lenses exist for your camera.