NOT TRUE,
Even the best 35mm film is only about 200 lp/mm.
Even using an excellent lens of 200 lp/mm results
in a film/lens combination of only 100 lp/mm.
The film DOES affect the result, even the best films....
JCO
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J.C. O'Connell mailto:[EMAIL PROTECTED] http://jcoconnell.com
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-----Original Message-----
From: Dag T [mailto:[EMAIL PROTECTED]
Sent: Sunday, September 14, 2003 4:23 PM
To: [EMAIL PROTECTED]
Subject: Re: Lens resolution
P� s�ndag, 14. september 2003, kl. 18:49, skrev Anders Hultman:
> Bob Blakely:
>
>>> I've seen people here talk about the resolution of lenses. I fully
>>> understand the physics behind resolution of both digital image
>>> sensors and film, but what really is resolution when talking about
>>> lenses?
>>
>> Lens resolution is defined as the number of resolution target lines
>> per
>> millimeter that can be discerned in the film. Discerned means that the
>> individual lines from the target can be seen, however slight and
>> fuzzy.
>> Where the lines cannot be discerned, a (theoretically) 50% gray is
>> observed.
>> The lines are black and the spaces between parallel lines are white
>> and of
>> the same width as the lines.
>
> To me, this sounds like this would be a property of the film, not a
> property of the lens? I mean, with higher definition film, a film with
> finer grain or whatever, it would be possible to show more detail,
> wouldn't it?
>
> Or is it really the lens itself that blurs the lines?
>
With a good film, the lens sets the limit, especially when using small
apertures.
DagT
