Re: Re: Re:ATM An Old TMs Simple Query

["mommoteandcoyote" <mommoteandcoyote@msn.com>]

The best way I found to solve the film bending problem for Schmidt cameras
slower than f/1.5  in the 6" to 10" range was to use 35mm roll film.

Salvaging parts from an old Konica 35 mm camera, a little aluminum sheet, a
couple of pieces of 1/4" aluminum plate, one machined to slip over the 1.3"
diameter film plate, the other was ground to conform to the film surface of
the film plate, with a 1" by 1 1/4" opening that centered over the film
holder.  affixed a compact body of sheet aluminum that held the film roll
and take up roll. Two snap clamps held the whole thing to a 3" diameter
mounting plate on 2 locater pins.  Unsnapping released the film tension
against the film plane, allowing you to advance the film, snap the clamps
back and it secures the film  and body in place and you're ready to burn
again.

 When done you could take it to 1 hr Foto if you wanted.

The 3" round obstruction though large wasn't objectionable in the 7.2"
camera . The film deformation at 1.3" diameter is less than .018".  The
photographic field measured 4.75 x 6.00 degrees.

Coyoté

----- Original Message -----
From: <klowther@cisnet.com>
To: <richas@earthlink.net>; <atm@shore.net>
Sent: Wednesday, January 22, 2003 4:04 PM
Subject: Re: Re: Re:ATM An Old TMs Simple Query


>
> My set up wasn't elegant.  And the camera was destroyed in a rear end
> collision before I got to use the film.  Basically, a round hole in two
> blocks.  Length of pipe cut at an angle.  This way you are only puncturing
> a small part of the film at a time.  The stuff is tuff.  You need an angle
> of more that a few degrees.  20 pound weight.  Dark room.  Insert film put
> pipe in hole, crunch it with the weight.
>
>
>
>
>