Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,206   Posts: 1,531,857   Online: 936
      
Page 2 of 2 FirstFirst 12
Results 11 to 13 of 13
  1. #11

    Join Date
    Aug 2004
    Location
    Boise, Idaho
    Shooter
    Multi Format
    Posts
    423
    Images
    30
    Quote Originally Posted by Ole
    I use a long corridor with a window in one end and a cupboard door in the other. I focus the image of the window on the door, lens simply hand-held. If I then mark of the width of the image, I can read the focal length directly off my "pre-calibrated" previous scratches.

    If the lens is a Rapid Rectilinear, there are only two lens groups of two elements each. Either one will give a viewable image, with a focal length of a bit more than twice that of the combined lens. If neither (or either) group won't give an image, it's not a RR.

    Many Anastigmats consist of one group that will focus and one which won't. If neither will, you might have two front groups in one barrel...
    Ole, I think this Queen Lens might have two mismatched cells. I have tried the approach of obtaining a picture on the white wall and using either cell by themself or combined, no picture appears and the lens barrel is almost flush on the wall. I believe it is going to be a paperweight if I can't get a refund....maybe the flange will work on another lens which comes my way.
    Thanks one and all for your assistance.

    Jon

  2. #12

    Join Date
    Aug 2004
    Location
    Boise, Idaho
    Shooter
    Multi Format
    Posts
    423
    Images
    30
    Well here is the update....the lens is being returned for a full refund. I realize there is not much money involved, but I wanted to posted this because the Ebay Seller, IMO, is honorable and has the strong character of standing behind his items, even though he is not required to provide a refund.

    I highly recommend this Ebay seller as a result. See: http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1

    Best wishes and Happy Easter, Jon

  3. #13
    Jim Jones's Avatar
    Join Date
    Jan 2006
    Location
    Rural NW Missouri
    Shooter
    4x5 Format
    Posts
    1,794
    I finally found an RR in all of my junk. If my tests and calculations are correct, each cell of yours should focus at about 25 inches

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin