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View Full Version : 6 X 12 cm Camera shutter detail



DVZ
10-23-2005, 06:49 PM
I wanted to have the shutter inside rather than outside the camera because I'd run into problems with the shutter sticking when I was out in the rain or when the humidity spiked up or down. I also sometimes had my shutter fall open while I was walking from one location to another, so I used a couple of small magnets, one on the shutter, one attached to the camera, to gently hold the shutter closed. The foam and cardboard in the film-spool area is to help keep the film under tension.
Attached files http://f295.f295.org/uploads/6x12openshutter650web_5850.jpg (http://f295.f295.org/uploads/6x12openshutter650web_5850.jpg) http://f295.f295.org/uploads/6x12closedshutter650web_5000.jpg (http://f295.f295.org/uploads/6x12closedshutter650web_5000.jpg)

earlj
10-23-2005, 09:56 PM
There is an amazing variety of shutter designs in pinhole cameras. This is a simple and elegant design. Thanks for showing it to us.

murrayatuptowngallery
10-24-2005, 02:45 AM
Is that a recycled shutter 'blade'? If so, what from? If not, what is it's origin?

DVZ
10-24-2005, 10:51 AM
Is that a recycled shutter 'blade'? If so, what from? If not, what is it's origin?

The shutter is made from ~1mm thick aluminum sheet, cut out with a jewler's hand-saw. *I used some species of "super" glue to fasten ebony to the aluminum to support the hinge and the connection to the piano wire linkage. *I wouldn't bend up a tab on a shutter system again. *The tab can reflect light onto the film in unexpected ways as it opens and closes... though I still like the system of using a couple of magnets to gently hold the shutter closed in transit.

willem
10-24-2005, 02:08 PM
It looks verry good thank fore to show it and good luck I am looking forwards to see more pinhols from this camera

ImageMaker
10-24-2005, 06:24 PM
If the tab for the magnet were on the opposite end of the shutter, on an extension to the left of the release wire attachment and bearing (as viewed in closed position), I think it would be sufficiently out of the light path to have no visible effect on the film. Whether the magnet would then interfere with the wire would be the question at that point, though I think it would be possible to change the wire position so the release is on top and pushes in to open (yes, there is a hazard of accidental opening that way, potentially solvable by installing a "safety" on the front that pushes in or slides to lock the shutter closed). One could also run the release through the front panel to give a directly rotating toggle there and avoid the wire entirely.