[MF3D.FORUM:1635] Re: Using front shift to simulate camera movements?

["Don Lopp" <dlopp@xxxxxxxxxxxxxxx>]

Check With Mike Watters HE has dode it in the past with some success and can
point out the akward problems involved ( flair, size etc ) DON
----- Original Message -----
From: "Bill Glickman" <bglick@xxxxxxxx>
To: "Medium Format 3D Photography" <MF3D.Forum@xxxxxxxxxxxxx>
Sent: Monday, April 09, 2001 12:12 PM
Subject: [MF3D.FORUM:1630] Using front shift to simulate camera movements?


>       I am trying to develop a MF camera system that allows one to set
> interocular bases at any seperation without physical limitations.....As we
> all know, this is physcially impossible sometimes with two non- shift
> cameras.  My idea was to use two cameras side by side, but each one would
> have the capability to shift the lens horizontally.   This has a very
> dramatic effect vs. spacing the cameras.  For example, I can simulate 24"
> interocular distance with only 3mm of front shift on one camera.  I have
> tested this, it works.  So a small amount of lens shift would simulate
> interocular spacing fro 0 to 500 + ft.
>
>       I have found that myself and my audience all prefer very small
OFD's,
> say 1.3mm, hence the need for bases much tigher than any two cameras can
> every physically acheive.   A fixed stereo camera (sputnicks) don't appeal
> to me because I want the flexibility of adjusting the interocular distance
> when required.
>
>         Although this sounds good in theory, I am curious if this will
> produce the same stereo effect as utilizing two cameras at the proper
> interocular distance.  I don't plan to use it for excessive bases, only
for
> 24" and less.  Has anyone every tried this before?  Any input?
>
> Bill G
>
>