[MF3D.FORUM:553] Re: Exact fl match for paired lenses.

["Bill Glickman" <bglick@xxxxxxxx>]

Les

      This is a fabulous fix for SLR cameras so you can see what the mirror
is showing... however, I am using rangefinder M7 camera, so I would have no
clue what the image to film would be.....  But I am not letting go of the
mirrors just yet..

Thanks for the input, others with SLR's probably have light bulbs going off
in their head right now....

Bill G

----- Original Message -----
From: "Lee Moore" <moore@xxxxxxxxxxxxx>
To: "Medium Format 3D Photography" <MF3D.Forum@xxxxxxxxxxxxx>
Sent: Wednesday, May 24, 2000 10:22 AM
Subject: [MF3D.FORUM:549] Re: Exact fl match for paired lenses.


> Many of the 1950's era 3-D movies were made by taking two conventional
> movie cameras (eg. Mitchell) and pointing them at each other.
> Between the lenses were placed two front surface mirrors to give
> the desired seperation.
>
>  --------         / \        --------
> | camera |==     /   \    ==| camera |
>  --------       /     \      --------
>
> Ray Zone gave a presentation on 50's stereo movies to the SCSC meeting
last week.
>
> Lee
>
>
> >>>"Bill Glickman" said:
>  > Tom
>  >
>  >        Thats a fabulous idea... is there anyone you know of, who can
make a
>  > mirror arrangement to shorten my stereo base?    I sure would like to
try
>  > it... I overlooked this option.... the only time I have seen mirrors
used
>  > was with a beam splitter which would not be too effective with
MF.....anyone
>  > tried this before or know who could make one?
>  >
>  >        This raises another question... is there any beam splitters
available
>  > for 4x5?  That would be perfect, 2 MF images on one chrome, with one
lens?
>  > I already have all the LF gear...David Lee, are you out there?  I am
sure
>  > you have explored this before?  Thank you..
>  >
>  >
>  > Bill G
>  >
>  >
>  > ----- Original Message -----
>  > From: "Tom Hubin" <thubin@xxxxxxxxx>
>  > To: "Medium Format 3D Photography" <MF3D.Forum@xxxxxxxxxxxxx>
>  > Sent: Tuesday, May 23, 2000 8:01 PM
>  > Subject: [MF3D.FORUM:528] Re: Exact fl match for paired lenses.
>  >
>  >
>  > > Hello Bill,
>  > >
>  > > > Maybe I am making some mistakes or overlooking something major?  I
am
>  > worn
>  > > > out and have exhausted my 3d knowledge....  Any input would be
helpful,
>  > at
>  > > > this point, I'll even accept a pat on the back.... and a "Nice try"
>  > remark
>  > >
>  > > You could use mirrors to reduce the seperation. Ideally each camera
>  > > would have a pair of mirrors acting like a sideways periscope. The
>  > > cameras can be seperated as much as you like with a mirror centered
on
>  > > each camera lens. The center mirrors would be 62mm apart.
>  > >
>  > > You could probably get away with one pair of mirrors on one camera
only.
>  > > The object distance from the camera with the mirrors would be greater
>  > > than the object distance from the camera without the mirrors, but
only
>  > > by a few inches. So it might not matter that only one camera uses a
pair
>  > > of mirrors.
>  > >
>  > > Tom Hubin
>  > > thubin@xxxxxxxxx
>  > >
>  >
>
> ---------------------------------
> Lee Moore Xerox Architecture Center
>