Results 1 to 5 of 5

Thread: Protarlinse focal length

  1. #1
    gchu1970's Avatar
    Join Date
    Aug 2008
    Location
    Shanghai, China
    Posts
    73

    Protarlinse focal length

    I recently got a protarlinse in compound shutter. The lens has sequential serial number with F=250mm of each group. I did not find data on Zeiss lens brochure. Would appreciate anyone can help me to identify the combination focal length?

  2. #2
    Jon Wilson's Avatar
    Join Date
    Jan 2004
    Location
    Idaho
    Posts
    651

    Re: Protarlinse focal length


  3. #3
    gchu1970's Avatar
    Join Date
    Aug 2008
    Location
    Shanghai, China
    Posts
    73

    Re: Protarlinse focal length

    I checked many sources and zeiss brochures, but did not found any information of F=250mm protarlinse. I don't know why? Anybody can help to explain? And there is no information about the combination focal length. Please help.

  4. #4

    Join Date
    Jan 2009
    Location
    Holland + Brazil
    Posts
    558

    Re: Protarlinse focal length

    The F could stand for focal lengh: just put the lens on the camera, focus at infinity and measure the distance between the GG and the aperture.
    This should give you a rough indication of the focal lengh.
    Some mm diference will not make that much diference in what angle you of view you will get and in that way you know a bit what you can do with the lens.

    Peter

  5. #5

    Join Date
    Sep 2006
    Location
    Frisco, Texas
    Posts
    143

    Re: Protarlinse focal length

    Do they say which Protarlinse:
    e.g.: VII or IV or other? They often do but not always.
    Bernie

Similar Threads

  1. Rangefinder focusing different lenses of the same focal length
    By ljsegil in forum Lenses & Lens Accessories
    Replies: 13
    Last Post: 1-Sep-2008, 13:08
  2. How accurately can you level your camera?
    By Leonard Evens in forum Style & Technique
    Replies: 50
    Last Post: 1-Sep-2008, 01:44
  3. Aperture: diameter for given focal length
    By Nicholas F. Jones in forum Lenses & Lens Accessories
    Replies: 4
    Last Post: 28-Jan-2008, 02:45
  4. Determining Max Shift with Tilt applied for Ultrawides
    By JPlomley in forum Lenses & Lens Accessories
    Replies: 4
    Last Post: 29-Jul-2007, 09:09
  5. Large Format Focal Length 35 mm Equivalent
    By Cedric P. Thevenaz in forum Lenses & Lens Accessories
    Replies: 16
    Last Post: 8-May-2001, 09:46

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
  •