[LargeFormat] Re: lens corner definition
largeformat@f32.net
largeformat@f32.net
Fri Dec 8 17:21:27 2000
----Original Message-----
>From: "Guy Glorieux" <guy.glorieux@sympatico.ca>
>Philip,
>
>Do you happen to have the exact URL reference to this table?
>
>Guy Glorieux
>Montreal, Canada
>
>
>There is an excellent
>> lens test table published on the Net by Christopher M. Perez/Kerry L.
>> Thalmann- showing definition in centre, middle and corner of field for
>> dozens of lenses. The conclusion might be drawn that stopping a lens down
>> to minimum aperture does not optimise definition. I expect diffraction is
>> the problem F22 or F16 is fine.
>>
>> Philip Lambert
Writing this from a small handheld machine in the depths of Norfolk - terrible 7 hour journey through rain and wind etc
There is a links page at http://www.f32.net which has the lens tests link for the excellent work carried out by Kerry and Chris. There are also a set of large format lens specifications under the "Services" menu item on the f32 web site which you may find useful.
All the best,
Clive (on the road!)