Re: [Rollei] Lens charts

[David Seifert <dseifert >]

Unfortunately some things just can't be explained in a few words, dammit!
Here is a link to a tutorial explanation of MTF:

http://www.normankoren.com/Tutorials/MTF.html

David
At 05:30 PM 5/8/2003 -0400, you wrote:



>  Where would I find a guide, preferably on-line, to understanding lens
>charts?  Alternatively, if
>  it could be put in a few words, please explain here?
>
>  I've come across two types of charts:
>
>  MTF: http://www.butzi.net/rodenstock/apo-sironar-n/180mm.htm
>
>  Modulation:
>http://www.schneideroptics.com/photography/large_format_lenses/apo-symmar-L/pdf/ApoSymmarL_56_180.pdf
>
>  Thanks,
>
>  Dan the K.

Best Regards,

David Seifert
dseifert  

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