[LargeFormat] Re: lens corner definition

[largeformat@f32.net]

----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!)