I thought people might be interested in this 'white paper' on the quality of lenses, from the Schneider Optics website. It explains MTF charts pretty clearly.

http://www.schneideroptics.com/info/white_papers/quality_criteri a_of_lenses.pdf

You'll need Adobe Acrobat Reader to read it.

-- Christopher Goodwin (christopher.goodwin@gte.net), March 17, 2002

Answers

I got a "dead link" notice off of the Schneider page...

-- Jack Flesher (jbflesher@msn.com), March 17, 2002.

It looks like there may be an errant space in the posted URL. This one should (if I'm lucky) be clickable.

Lens Quality white paper.

-- Ralph Barker (rbarker@pacbell.net), March 17, 2002.

If the link doesn't work, go to the Schneider site

http://www.schneideroptics.com/

and click on Info on the far right, and then 'white papers'. There's a lot of other good stuff on the site as well.

-- Christopher Goodwin (christopher.goodwin@gte.net), March 17, 2002.