Re: Panorama Tools

[Glenn Barry <glenn@xxxxxxxxxxx>]

Hi Jook,
very distressing thing, two days after I got the lens I had to sit down with
a small hacksaw and cut the lens shade off. I manages to keep it one piece so
that I can re-attach it for if I am shooting normal 35mm.

I have made a camera out of three parts:
An extension tube mount that screws into a copal #3 shutter.
A plate that the shutter screws onto with a recess machined into it so that
the lens to film distance is correct
A rotating Horseman (I think, at least that is the name on the focus screen)
6x7 and 6x9 back that takes my Mamiya RB backs. I have just used four thumb
screws from a Photoflex softbox to attach the plate to the rotatig back, so
that I can remove it easily for use on my 4x5. I can use this setup with any
of my 35 mm lenses for a full circle image, or a 36x36 square which
simplifies the number of scans that I have to do.

Glenn

Jook Leung wrote:

> Glenn,
> Does the fixed lens shade of the Sigma lens get in the way or how did you
> remove it.
> What camera are you mounting to?
> Curious.
>
> >Hi All,
> >
> >I am having problems determining correction co-efficients (Panorama
> >tools correct) and Field of view values (Panorama Tools Remap) for a
> >15mm F2.8 AF Sigma fisheye. When I run multiple optimizations my values
> >seem to fluctuate and the between actual and desired values between
> >correction points don't decrease.
> >Has anybody else had any success determining these values that they
> >could share?
> >
> >
> >One thing to bear in mind is that I am shooting full circle fisheye with
> >this lens on 120.
> >
> >Thanks
> >
> >Glenn
> >--
> >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
>
> =============================================================
> JOOK LEUNG
> 360VR Photography
> 44A Honeck Street
> Englewood, NJ  07631
> http://360vr.com   voice: 201.894.5881    fax: 201.894.5882

--
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