RE: long exposures, reciprocity failure and development times

 I hate to even repeat this, as it is like a reoccurring nightmare etched
into my brain...(laugh)...
 I studied under Wiley Sanderson at the University of Georgia and I remember
one of his most outspoken mantras was this..."You cannot over-develop, you
can only prove under-exposure."
 For what it's worth...I thought I would throw that out even though it may
not apply to this particular situation.
 Ronnie Pettit

-----Original Message-----
From: Bogdan Karasek [mailto:bkarasek@videotron.ca]
Sent: Tuesday, June 04, 2002 11:17 AM
To: pinhole-discussion@pinhole.com
Subject: Re: [pinhole-discussion] long exposures, reciprocity failure
and development times

Shannon Stoney wrote:
>
> I have a chart that shows reciprocity failure adjustments for various
> black and white films. This chart also suggests decreasing development
> times as exposure times increase. The reasoning is that reciprocity
failure
> affects the shadow areas more than the highlight areas. Is this correct?
I
> also have a pinhole time calculator that suggests INCREASING development
> times as exposure times increase. Which is correct? (Excuse the
> cross-posting if you read alt-photo-process and pinhole-discussion.)
>
> --shannon
>
> _______________________________________________
> Post to the list as PLAIN TEXT only - no HTML
> Pinhole-Discussion mailing list
> Pinhole-Discussion@pinhole.com
> unsubscribe or change your account at
> http://www.pinholevisions.org/discussion/

Hi,

All the charts that I have seen and from from personal
experience, an increase in exposure is always associated with a
proportionate decrease in development time.

Hope this helps.
Bogdan

-- 
__________________________________________________________________
  Bogdan Karasek
  Montréal, Québec            e-mail: bkarasek@videotron.ca
  Canada 
"Wovon man nicht sprechen kann, darüber muss man schweigen" 
"What we cannot speak about we must pass over in silence"
  Ludwig Wittgenstein 
________________________________________________________________
_______________________________________________
Post to the list as PLAIN TEXT only - no HTML 
Pinhole-Discussion mailing list
Pinhole-Discussion@pinhole.com
unsubscribe or change your account at
http://www.pinholevisions.org/discussion/