[LargeFormat] Re: lens corner definition

[Lee Carmichael]

I have a friend in Mass. that is teaching at Clark College.   He is using 
this 90mm Angulon on an 8x10 camera.  He calls it his 8x10 Holga 
camera.  Interesting images.  Lots of vignette.  Makes an interesting 
presentation.


At 08:05 PM 12/7/00 +0000, you wrote:
>I think someone recently talked of using a 90mm Angulon on 5x4 and stopping
>down to f32 for maximum sharpness in the corners.  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
>
>
>
>
>_______________________________________________
>LargeFormat mailing list
>LargeFormat@f32.net
>http://www.pairlist.net/mailman/listinfo/largeformat

As usual,
Lee Carmichael

check out: http://www.f32.net/Services/Photographers/LeeCarmichael.html