Dektol temp vs. dev time?

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Vince - 25 Feb 2006 22:05 GMT

Hi all- I have a small home darkroom and
do B+W. I have a darkroom Analyzer from
England (http://www.rhdesigns.co.uk/)
that requires calibration at a constant
paper development temp that the user
normally uses. For Dektol, this
recommended temp is 68 deg F and 1
minute for RC paper. However here in
Florida, that temperature is very
difficult to maintain during a long
session without great effort. Does
anyone know of a temperature/time
comversion chart for Dektol (similiar to
those available for film development
times at different temperatures)?

Regards, Vince

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dan.c.quinn@att.net - 25 Feb 2006 23:11 GMT

> Hi all- I have a small home darkroom and
> do B+W. I have a darkroom Analyzer from
[quoted text clipped - 13 lines]
>
> Regards, Vince

I may be over looking something but off hand
I'd say ignor the temp adjustment. I can't think of
any good reason for having included such a feature.
Most are aware that prints as a rule are developed
to completion.
You may wish to find the minimum time needed
for complete development. For example find the time
for 76F. Do not process for less than that time and be
sure you are at or above that temperature.
If you were running a few dozen same prints through
a big tray of the same developer perhaps that
adjustment would help save time. Dan

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Tom Phillips - 01 Mar 2006 09:22 GMT

> > Hi all- I have a small home darkroom and
> > do B+W. I have a darkroom Analyzer from
[quoted text clipped - 19 lines]
> Most are aware that prints as a rule are developed
> to completion.

Right. Temp (within reason) can be ignored. Use
instead the factorial method. (described by Adams
in The print.)

> You may wish to find the minimum time needed
> for complete development. For example find the time
[quoted text clipped - 3 lines]
> a big tray of the same developer perhaps that
> adjustment would help save time. Dan

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Ray - 26 Feb 2006 12:37 GMT

I'm in Phila. and I've printed photos as high as 75 deg. Usually 1 1/2 min @
68 and 1 1/4 min @ 75.

Ray

> Hi all- I have a small home darkroom and do B+W. I have a darkroom
> Analyzer from England (http://www.rhdesigns.co.uk/) that requires
[quoted text clipped - 6 lines]
>
> Regards, Vince

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