Results 1 to 3 of 3

Thread: geeky aperture question

  1. #1

    Join Date
    Dec 2001
    Location
    San Joaquin Valley, California
    Posts
    9,082

    geeky aperture question

    I saw an example of a photo taken with a 6" focal length bi-convex lens lens with a
    3/4" aperture which I'd like to replicate but I only have a 250mm (10") focal length bi convex available to use. Is there a way to extrapolate the size of the aperture I'd need to fabricate in order to obtain the same look as what was done with the 6" focal length lens? I keep coming up with 1-1/4" aperture but I'm lousy at this stuff!
    I steal time at 1/125th of a second, so I don't consider my photography to be Fine Art as much as it is petty larceny.
    I'm not OCD. I'm CDO which is alphabetically correct.

  2. #2

    Join Date
    Dec 2001
    Location
    NJ
    Posts
    7,871

    Re: geeky aperture question

    10 * .75/6 = 1.25

  3. #3

    Join Date
    Dec 2001
    Location
    San Joaquin Valley, California
    Posts
    9,082

    Re: geeky aperture question

    Thanks Dan!
    I steal time at 1/125th of a second, so I don't consider my photography to be Fine Art as much as it is petty larceny.
    I'm not OCD. I'm CDO which is alphabetically correct.

Similar Threads

  1. Question on meter, f-stop
    By Wanderon in forum Style & Technique
    Replies: 9
    Last Post: 26-Jan-2007, 00:13
  2. Old timer asks newby-like aperture question
    By Bill_1856 in forum Style & Technique
    Replies: 5
    Last Post: 25-Aug-2006, 17:27
  3. question about wollensak wide angle lens
    By jnantz in forum Lenses & Lens Accessories
    Replies: 3
    Last Post: 10-Mar-2002, 16:31
  4. Flash Exposure Question
    By howard s in forum Style & Technique
    Replies: 4
    Last Post: 28-Feb-2002, 14:46
  5. Scals of Zeiss Protar aperture
    By Cheng Lu in forum Lenses & Lens Accessories
    Replies: 4
    Last Post: 18-Jul-1999, 03:24

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
  •