[HUG ] Re: A Sad Day
- From: Bob Adler <rgacpa@xxxxxxxxx>
- To: hasselblad@xxxxxxxxxxxxx
- Date: Thu, 9 Oct 2008 14:38:46 -0700 (PDT)
Thanks Nick. I'll keep posting until I get kicked off :-)
Bob
Bob Adler
Palo Alto, CA
rgacpa@xxxxxxxxx
http://www.raflexions.com
----- Original Message ----
From: Nick Wilson <toona@xxxxxxxxxxx>
To: hasselblad@xxxxxxxxxxxxx
Sent: Thursday, October 9, 2008 2:27:53 PM
Subject: [HUG ] Re: A Sad Day
Bob, you have left the dark slide for the dark side, but good luck with
the shifting histograms. Always a generous voice on this forum!
I looked up my optics book on 'lens defecation'...apparently the term
arises as lens quality goes to s*** when diffraction effects
progressively increase with smaller and smaller apertures past the optimum.
Nick
> All good to know. Thanks!
>
>
> Bob Adler
> Palo Alto, CA
> rgacpa@xxxxxxxxx
> http://www.raflexions.com
>
>
> ----- Original Message ----
> From: Q.G. de Bakker <qnu@xxxxxxxxxx>
> To: hasselblad@xxxxxxxxxxxxx
> Sent: Thursday, October 9, 2008 1:48:09 PM
> Subject: [HUG ] Re: A Sad Day
>
> Wilko wrote:
>
> >> So if a design is free of lens faults, the best aperture for
> sharpness is
> >> the widest one.
> >
> > Like the Sonnar CF5.6/250 if I am not mistaken. Not sure about the C250
>
> Which reminds me that i should add that the best aperture to use for
> sharpness also is the widest one when a lens' lens faults are not
> reduced by
> stopping down.
> ;-)
>
>
>
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