Page 2 of 10 FirstFirst 1234 ... LastLast
Results 11 to 20 of 98

Thread: Ideas for new shutters 40 years from now when ours are all dead

  1. #11
    Foamer
    Join Date
    Oct 2010
    Location
    South Dakota
    Posts
    1,801

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Forty years from now? I have lenses in working shutters from 1901, 1905, 1918, ...... I even have a c.1880s Prosch Duplex that's working now as well as it ever did.

    Just saying.


    Kent in SD
    Qui sedes ad dexteram Patris,
    miserere nobis.

  2. #12

    Join Date
    Jul 2016
    Posts
    4,363

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Quote Originally Posted by Jim Galli View Post
    All you need is 2 polarizers and a motor.
    Rapid Action Camera (Rapatronics https://en.wikipedia.org/wiki/Rapatronic_camera) used two polarizers, shutter speed: 10 nanoseconds. It was used to shot nukes while exploding...



    Jim, it looks you know what's a photosonics


    The welding helmet has a switch time that is less than 1/25000s, but (I guess) near a full stop can be lost because it's not completely clear, also surfaces are not coated, I guess. It should be tested if it can degradate image. As it is not completely opaque perhaps a mechanical door should open for the exposure.


    Guillotine shutters should also operate well:

    https://www.largeformatphotography.i...er-speeds.html
    https://www.largeformatphotography.i...lotine+shutter

  3. #13

    Join Date
    Sep 1998
    Location
    Buford, GA
    Posts
    12,909

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Quote Originally Posted by Pere Casals View Post
    Rapid Action Camera (Rapatronics https://en.wikipedia.org/wiki/Rapatronic_camera) used two polarizers, shutter speed: 10 nanoseconds. It was used to shot nukes while exploding...



    Jim, it looks you know what's a photosonics


    The welding helmet has a switch time that is less than 1/25000s, but (I guess) near a full stop can be lost because it's not completely clear, also surfaces are not coated, I guess. It should be tested if it can degradate image. As it is not completely opaque perhaps a mechanical door should open for the exposure.


    Guillotine shutters should also operate well:

    https://www.largeformatphotography.i...er-speeds.html
    https://www.largeformatphotography.i...lotine+shutter
    Among the cameras that EG&G used for the bomb tests were several Linhof Aero Technika 45 EL cameras.

  4. #14
    Nodda Duma's Avatar
    Join Date
    Nov 2014
    Location
    Brookline, NH
    Posts
    903

    Re: Ideas for new shutters 40 years from now when ours are all dead

    I worked on polarized rotating pairs before for a project. The issue is that rotating polarizer pairs do not go completely opaque. The transmission range for a pair varies between 25% (ND 0.6) and something like 1% or 0.1% (ND 2 or 3, itís just been too long to remember) transmission. Also itís polarized, so what you see is not what you get.

    Worked with fast switching LCD screens too. They have similar limitations.

    I have been thinking about reaching out to Uniblitz, who Iíve worked with before on aerospace applications, to see what it would take to make Copal / Compur compatible shutters and then doing a Kickstarter. Thatís a project for next year or the year after, tho.
    Newly made large format dry plates available! Look:
    https://www.pictoriographica.com

  5. #15
    William Whitaker's Avatar
    Join Date
    May 2002
    Location
    the Southern Part of Heaven
    Posts
    1,289

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Whatever became of the "Galli Shutter"?

  6. #16

    Join Date
    Sep 2003
    Location
    La Luz del Oeste, Albuquerque NM
    Posts
    522

    Re: Ideas for new shutters 40 years from now when ours are all dead

    very interesting thread but 40 years from now is beyond my planning horizon.
    Peter Collins

    On the intent of the First Amendment: The press was to serve the governed, not the governors --Opinion, Hugo Black, Judge, Supreme Court, 1971 re the "Pentagon Papers."

  7. #17

    Join Date
    May 2010
    Location
    St. Louis, Mo.
    Posts
    2,949

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Quote Originally Posted by William Whitaker View Post
    Whatever became of the "Galli Shutter"?
    It should be still around in 40 years. Perhaps Jim has never heard of it?

  8. #18

    Join Date
    Dec 2000
    Location
    Tonopah, Nevada, USA
    Posts
    6,338

    Re: Ideas for new shutters 40 years from now when ours are all dead

    I plan to be dead in 40 years. But I'm sure the film in my freezer will be put on ebay, so somebody's going to need a shutter. The Galli shutter only works if you're Italian. The no new lenses thread got me pondering this, but honestly, all the same reasons apply. No reason old shutters should fail in 40 years. But I thought ill of disrupting that thread. Again.

  9. #19

    Join Date
    Jul 2017
    Posts
    58

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Given the direction things are heading, a lack of working shutters will most likely be a non-issue.

  10. #20

    Join Date
    Feb 2008
    Location
    The Highlands of Scotland
    Posts
    243

    Re: Ideas for new shutters 40 years from now when ours are all dead

    Maybe we'll need to go back to using Homburg or Top hats (other hats are available) as shutters

    Mike

Similar Threads

  1. with polaroid dead...the large format is also dead?
    By danzyc in forum Cameras & Camera Accessories
    Replies: 17
    Last Post: 6-May-2008, 20:16
  2. Replies: 6
    Last Post: 6-Mar-2000, 18:16

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •