Re: Adjusting development for temperature

On Apr 6, 9:46=A0pm, sometime.photograp...@[EMAIL PROTECTED]
 wrote:
> Given that the basement is still coolish from the winter, what would
> be the best development time factor for D76 at 60 deg F (15 deg C)?
>
=2E...
>
> Thanks for any comments.

You have mentioned a number of points of uncertainty:
long hiatus
old film
long time since exposure

You haven't mentioned much about the rest of your technique (e.g., how
sure are you that you used the correct exposure allowing for old film
& etc., why not keep the solutions in a warm room, load the film in a
tank in your dark room and develop the film at a more convenient
temperature in a warm room, how accurated is your time keeping,
temperature measurement and how consistently correct are the solutions
& etc).

Personally, I've had poor experience with Plus-x in D-76 at cold
temperatures.  I settled on never developing it below 65F.  That was
decades ago and I forget the details.  Perhaps I was wrong.

Even so, you need to prove you can get a correctly exposed roll of
your old film developed to normal density and contrast.  To do this, I
thing you need to plan on trying more than one roll of test pictures
(sheet film is an attractive alternative for such experiments, if
available).