Results 1 to 5 of 5

Thread: Why your 500mm lens cost so much...

  1. #1
    Senior Member UncleFai's Avatar
    Join Date
    Mar 2010
    Location
    Singapore
    Posts
    4,429

    Default Why your 500mm lens cost so much...


  2. #2
    Moderator diver-hloc's Avatar
    Join Date
    Apr 2007
    Location
    Somewhere North
    Posts
    5,201

    Default Re: Why your 500mm lens cost so much...

    Never suspected that they treat the raw, unpolished glass like metal by a blacksmith... heating and molding the glass into shape by using a giant metal press....

    Scuba & Father... For Life

  3. #3

    Default Re: Why your 500mm lens cost so much...

    Just imagine how many fingers are cut to make a lens for you! XD

  4. #4

    Default

    Interesting!
    KF Photography
    Thanks for viewing!

  5. #5
    Member clov3r's Avatar
    Join Date
    Nov 2009
    Location
    Bukit Gombak
    Posts
    234

    Default Re: Why your 500mm lens cost so much...

    They actually annealed the glass to remove the stresses, very interesting. I only know that they do that to metals.

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
  •