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  1. #1
    W. Watson's Avatar
    W. Watson Guest

    Default PC23C with a 35mm Lens



    I have a Supercircuits PC23c survellience camera that takes a C/CS camera to lens. I
    have an adapter that gets me from C to 35mm but this adapter ends up making the focus
    a little off. Is there some adapter that allows variability in the attachment so the
    focus is correct?
    --
    Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet, Nevada City, CA)
    -- GMT-8 hr std. time, RJ Rcvr 39┬░ 8' 0" N, 121┬░ 1' 0" W

    Your mother was right. Wear your hat and sunglasses in the summer sun.
    This is especially true if you're older. -- NYT Science Section, May 2004

    Web Page: <home.earthlink.net/~mtnviews>
    sierra_mtnview -at- earthlink -dot- net
    Imaginarium Museum: <home.earthlink.net/~mtnviews/imaginarium.html>

  2. #2
    David M. Palmer's Avatar
    David M. Palmer Guest

    Default PC23C with a 35mm Lens

    In article <hXOwc.24215$Tn6.20853@newsread1.news.pas.earthlin k.net>, W.
    Watson <wolf_tracks@invalid.inv> wrote:


    The difference between C and CS (IIRC) is that C has an additional 5 mm
    focal length. This is provided by a little adaptor which, on my PC23c,
    is a little black coupler ring with both male and female threads. If
    you don't have that black ring in your adaptor chain, add it in.

    You can also loosen a set screw and thread out the metal C mount on the
    camera body. You can get a few mm that way, or you can go even further
    and drop the lens on the floor (retighten the set screw).

    --
    David M. Palmer dmpalmer@email.com (formerly @clark.net, @ematic.com)

  3. #3
    W. Watson's Avatar
    W. Watson Guest

    Default PC23C with a 35mm Lens

    David M. Palmer wrote:

    Thanks. I always wondered what the black ring was for. It seemed to have no real
    purpose. I'll try to avoid dropping the lens. :-)

    --
    Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet, Nevada City, CA)
    -- GMT-8 hr std. time, RJ Rcvr 39░ 8' 0" N, 121░ 1' 0" W

    Your mother was right. Wear your hat and sunglasses in the summer sun.
    This is especially true if you're older. -- NYT Science Section, May 2004

    Web Page: <home.earthlink.net/~mtnviews>
    sierra_mtnview -at- earthlink -dot- net
    Imaginarium Museum: <home.earthlink.net/~mtnviews/imaginarium.html>

  4. #4
    W. Watson's Avatar
    W. Watson Guest

    Default PC23C with a 35mm Lens

    David M. Palmer wrote:

    Hi,

    some additional experimenting found that I had to take off the pc23c silver threaded
    insert and the plastic insert. To get focus with my (Orion) C/Pentax adapter I had to
    put the barrel of the adapter inside the pc23c almost entirely. This C/Pentax adapter
    is obviously too long. I would think someone would market one. Actually, the adapter
    is probably meant for a variety of cameras. The portion between the adapter and end
    of the camera lens has an insert to accommodate other lenses than the Pentax screw
    mounts.

    Well, maybe finding someone handy with tools that can make a reasonable device is the
    way to go. Maybe just a lot of rubberbands to hold the lens in place will do it.
    Anyway, I can see that focus is within reason with my 8-135 Pentax zoom lens.

    --
    Wayne T. Watson (121.015 Deg. W, 39.262 Deg. N, 2,701 feet, Nevada City, CA)
    -- GMT-8 hr std. time, RJ Rcvr 39░ 8' 0" N, 121░ 1' 0" W

    Your mother was right. Wear your hat and sunglasses in the summer sun.
    This is especially true if you're older. -- NYT Science Section, May 2004

    Web Page: <home.earthlink.net/~mtnviews>
    sierra_mtnview -at- earthlink -dot- net
    Imaginarium Museum: <home.earthlink.net/~mtnviews/imaginarium.html>

 

 

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