Re: Tilt lens for panoramic

[Robert Erickson <bob@xxxxxxxxxxxxx>]

Wedge filters are available in the 2 to 10 degree range.

Robert Erickson, bob@xxxxxxxxxxxxx
http://panoramic.net
-----Original Message-----
From: Mike Sinclair <sinclair@xxxxxxxxxxxxx>
To: panorama-l@xxxxxxxxxxxxxxxxx <panorama-l@xxxxxxxxxxxxxxxxx>
Date: Saturday, September 26, 1998 7:28 PM
Subject: FW: Tilt lens for panoramic


Interesting..

How much does the wedge tilt?

Doesn't the wedge act as a prism, causing chromatic dispersion?

-Mike-


> -----Original Message-----
> From: Willem-Jan Markerink [SMTP:w.j.markerink@xxxxx]
> Sent: Saturday, September 26, 1998 5:51 PM
> 
> On 26 Sep 98 at 5:25, Alan Zinn wrote:
> 
> > When you say "tilt" don't you mean "shift"?  you move the lens up and
> down
> > parallel to the picture plane no?  If you want a simple "tilt" that
> works on
> > any lens buy a wedge prism from Edmunds Scientific.  I have one in a
> > cardboard "universal" ,rubberbands and foam, mount that I slip over the
> > front of an SLR lens. it gives the effect of looking up or down while
> the
> > camera remains level to the horizon.
> 
> Does this work on swing-lens pan cameras as well?
> Does one need as much 'wedge' as is needed for the degree of tilt, or 
> is the optical formula more complex?
> (respective refraction indexes of lens and wedge?)
> 
>  
> 
> --                 
> Bye,
> 
> Willem-Jan Markerink
> 
> 
>       The desire to understand 
> is sometimes far less intelligent than
>      the inability to understand
> 
> 
> <w.j.markerink@xxxxx>
> [note: 'a-one' & 'en-el'!]