Re: fisheye or roundshot?

["George S. Pearl" <alps007@xxxxxxxxxxxxxx>]

OK...So are you saying that because the 180 degree "fisheye" lens is so wide
that the effect of blurring will be pronounced at the top and bottom of the
frame if this 180 degree lens were to be used on a 220 VR Roundshot camera?
I know it is OK to use the 24mm lens on the 220 Roundshot because I have
one, but don't know the widest angle lens that can be used. Does anyone
know?
My best,
George S. Pearl, QPP
Atlanta Panorama

----- Original Message -----
From: Glenn Barry <glenn@xxxxxxxxxxx>
Cc: Panoramic List <Panorama-l@xxxxxxxxxxxxxxxxx>
Sent: Friday, April 14, 2000 8:49 PM
Subject: Re: fisheye or roundshot?


> The easy way to see this is to put the lens on look through the viewfinder
> or ground glass and watch the degree of image distortion as you rotate the
> camera. Fisheye mapping and compression requires that this is quite
severe,
> more so at the edges agreed, but it is present throughout the frame
> including the centre. Just look at a straight line in the middle of the
> frame. It must begin to curve the moment you rotate the lens due to the
> fisheye projection. There will always be some blurring.
>
> Glenn
>
> Rod Sage wrote:
>
> > >
> > > Fisheyes on a scanning slit panorama camera do not work very well.
> > > For example if you set the rotation and film transport speed/ratio to
> > > give you a good image in the centre of your picture you will find that
> >
> > > the further you go from the centre toward the edge the more streaked
> > the
> > > subject will become.
> > >
> > > Cya
> > > Steve
> >
> > Wouldn't it depend on the width of the slit? A narrow slit will have
> > less distortion taking place on the top and bottom edges. If you look
> > though an SLR with a fisheye or wide lens and pan the camera you will
> > notice a curving, pinching effect taking place along the left and right
> > edges, but vertically through the center the image is fairly stable and
> > predictable.
> >
> > RDS
>
> --
> Glenn Barry Photography
> Studio 1, Level 1
> 2-14 Mountain St
> Ultimo N.S.W. 2007
> Australia
> Ph (612) 9211 3080
> Mobile 0415 279 366
> E-Mail: mailto:glenn@xxxxxxxxxxx
> Web: http://www.acay.com.au/~glenn
>
>