[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Rollei] OT: Developing at high temperatures
- Subject: Re: [Rollei] OT: Developing at high temperatures
- From: Mark Rabiner <mrabiner >
- Date: Wed, 09 Feb 2000 21:08:37 -0800
Richard Urmonas wrote:
> Has anyone had experience developing black and white at high temperatures?
> Here in Adelaide Australia we are in summer so my cold tap water is at 27 deg
> (80 deg F for the non-metric speakers). Room temperature is higher than this
> so I would need to be working at 28-29 deg (82-84 deg F).
> I am mainly concerned with how the negative tonality may change and any
> processing problems.
> I have read about "Tropical processing" which seems to harden the film early
> in the process to stop the gelatine swelling. Would I need to do this?
> Thank you.
> Richard Urmonas
You put some Sodium SulFATE in to stop the negs from swelling.
But negs don't swell like they used to.