P3D Re: Inter-lens distances

[George Themelis <gthemelis@xxxxxxxxx>]

-- Peter Davis <pd@xxxxxxxxxxxxx> wrote:

> I don't think there have been any stereo cameras with
> adjustable lens spacing.  Since these would have variable 
> spacing of frames on the film (unless some very elaborate 
> system of mirrors and prisms were used), cutting and mounting 
> would be pretty difficult.  

Exactly!  Not just cutting and mounting but even advancing the
film would be very complicated/impossible.

> Variable spacing is possible with a twin camera rig

Yeap!  Also, sliding a single camera if it is acceptable for the
application.

> I don't know of cameras that offer a 59mm spacing.  

There is one that has excactly 59mm spacing.  As Gabriel
correctly said, this is the RBT S1 (made of two joined Konica
Hexar 35mm/2.0 cameras)

>Have you tried any of the more common cameras, which typically 
> offer 65mm to 70mm spacing?  You may find them acceptable.

Yes, these can be perfectly acceptable.  Only under certain
controlled conditions and usually by comparing you would be able
to tell the 59mm from the 65mm, from the 75mm.

George Themelis

=====
George Themelis (DrT-3d@xxxxxxxxxxxxxxxx)
__________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com