Pages: [1]   Go Down

Author Topic: There is No Perfect Lens  (Read 768 times)


  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 1169
There is No Perfect Lens
« on: September 25, 2013, 07:33:35 PM »

"The Three Questions

I get asked a couple of questions every time I publish a graph showing Imatest results for multiple copies of lenses like the one below. Most people understand that some copy-to-copy variation is inevitable in the manufacturing process. Most are surprised, though, at how large the sample variation seems to be. Heck, I was surprised at how large the sample variation was when I started doing this kind of testing.

The three questions I get asked over and over are the same questions I asked myself when I first started seeing these results:

    Are you sure the variation is that great?
    Can you really see the difference in a photograph?
    Can optical adjustment make the copies with the worst results better?

Rather than constantly answering these questions in email, I thought Id just make a reference post that answers them as completely as I can."

A very interesting article.

Eric Myrvaagnes

  • Sr. Member
  • ****
  • Online Online
  • Posts: 9491
Re: There is No Perfect Lens
« Reply #1 on: September 25, 2013, 08:10:07 PM »

Great article! Thanks for sharing it (and for doing all the grunt work).
-Eric Myrvaagnes  Visit my website. New images each season.
Pages: [1]   Go Up