[Leica] Putting X-Synch on a 100 Year Old Camera

[Sonny Carter]

https://makezine.com/projects/simple-scanner-camera/

On Wed, Aug 14, 2019 at 12:43 PM CartersXRd via LUG <lug at leica-users.org>
wrote:

> next thing you know, you’ll be adapting a flatbed scanner and Graflock
> back on the thing;^_
>
> ric carter
>
>
>
> > On Aug 14, 2019, at 1:40 PM, Peter Dzwig <pdzwig at summaventures.com>
> wrote:
> >
> > Fascinating. Thank you for posting such a detailed response. I wonder
> > what its makers would have thought of your ingenuity.
> >
> > Peter
> >
> > On 13/08/2019 23:20, Alan Magayne-Roshak wrote:
> >> Peter Dzwig asked me about putting X-Synch on my ca. 1917 4x5 RB
> (Revolving
> >> Back) Graflex.
> >> Here's the story.
> >>
> >> The camera that I bought to go with my 9" f/4 Wollensak Verito Diffused
> >> Focus lens that I got for $12.00 in 1985:
> >> <
> >>
> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Gear/MR_Graflex_1_Orig.jpg.html
> >>>
> >>
> >> Side view showing the wiring path:
> >> <
> >>
> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Gear/MR_Graflex_2_X-Synch.jpg.html
> >>>
> >> The Graflex has a focal plane shutter with multiple slits and spring
> >> tensions.  When the shutter is set to "O" (for open) the film
> >> plane is uncovered but the mirror blocks light from exposing the film.
> With
> >> a high tension, when the shutter button is pressed, the
> >> mirror flips out of the way, trips the shutter, the entire film area is
> >> exposed for a fraction of a second, and then the shutter curtain comes
> down
> >> and covers the focal plane.  I made some contacts out of Aurora HO-scale
> >> slot car pick-ups and mounted them so that the one on the mirror reset
> >> lever would strike the stationary one at the moment after the mirror was
> >> up, but before the shutter
> >> curtain comes down to cover the film.  I can adjust the timing by
> loosening
> >> the set screw on the arm, and varying the angle
> >> of the moving contact.  The wire ends in a standard PC fitting.  The
> lead
> >> going down and inside is for the microswitch in
> >> picture five.
> >>
> >> Closer view with mirror down and shutter cocked:
> >> <
> >>
> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Gear/MR_Graflex_3_X-Synch.jpg.html
> >>>
> >>
> >> Closer view with mirror up and shutter tripped:
> >> <
> >>
> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Gear/MR_Graflex_4_X-Synch.jpg.html
> >>>
> >>
> >> If I didn't do anything more, the flash would fire again as I reset the
> >> mirror lever for viewing, so in the mirror box I
> >> added a microswitch that only completes the circuit when the
> mirror/shutter
> >> release lever pushes against it.  When the shutter
> >> button is released, the switch opens the circuit and the external mirror
> >> reset lever can swing past the stationary contact without
> >> setting off the flash.
> >>
> >> Microswitch and internal mirror release lever:
> >> <
> >>
> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/Gear/MR_Graflex_5_X-Synch.jpg.html
> >>>
> >>
> >> I usually like to use this camera with a Graflex 2-1/4 x 3-1/4 roll film
> >> back, so when I'm employing electronic flash, I have
> >> to do this for every shot (except the dark slide only needs to be
> pulled at
> >> the start and pushed in at the end of the roll).
> >>
> >> 1. Have shutter set to "O" and mirror down.
> >> 2. Focus and compose (remembering to orient the roll film back to match
> >> rectangles for vertical and horizontal shots drawn on the ground glass).
> >> 3. Trip shutter.
> >> 4. Wind film to next frame (there's no double-exposure prevention).
> >> 5. Reset mirror to viewing position.
> >> 6. Rewind shutter to "O" position.
> >> 7.  Steps 2, 3, 4, 5, & 6 for each of the remaining seven frames.
> >>
> >> Simple.
> >> -
> >> Alan
> >>
> >> Alan Magayne-Roshak, Senior Photographer
> >> University of Wisconsin-Milwaukee Photo Services
> >> (Retired)
> >> UPAA Photographer of the Year 1978
> >> UPAA Master of the Profession 2014
> >> amr3 at uwm.edu
> >> http://gallery.leica-users.org/v/Alan+Magayne-Roshak/
> >>
> >> "All the technique in the world doesn't compensate
> >> for an inability to notice. " - Elliott Erwitt
> >>
> >> _______________________________________________
> >> Leica Users Group.
> >> See http://leica-users.org/mailman/listinfo/lug for more information
> >>
> >
> > --
> >
> > Dr. Peter Dzwig
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information

-- 
Regards,

Sonny
http://sonc.com/look/
Natchitoches, Louisiana
1714
Oldest Permanent Settlement in the Louisiana Purchase

USA