Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
> Why pre-soak ? |
*** Click here for the FADU 2015/2014 Yearbooks *** |
|
Thread Tools | Search this Thread | Display Modes |
#11
|
|||
|
|||
If you don't pre-soak the. The antihalation layer gets washed off with the dev/stop/fix and final wash anyway.
I use a pre-rinse with E6 as the it solved a problem of evenness I was having attributed to dev splashing into the tank and splattering the dry film. On the other hand, I prerinsed my first roll of Pan-F and this caused uneven blotchy skies. I get the impression that prerinsing less temperamental emulsions like HP5+ and FP4+ is ok. The idea of getting everything to the correct temperature is probably good in theory, especially if you're using a short dev time, but when I don't prerinse, which is most of the time now with b&w, I don't seem to have any problems. My advice would be unless you've actually had a specific development problem that you are trying to resolve with a prerinse then I wouldn't bother. |
#12
|
|||
|
|||
Quote:
Before processing C41, I did a dry run and measured the temperature on pouring out a tankful of tempered water (stainless-steel spirals in a stainless-steel tank). I don't remember the temperature drop but I gave an extra 15sec dev and everything was fine. As Dave P advises, I never pre-rinse 120 Delta 100 in Rodinal 1:50 at around 20...24°C (Ilford adjustment table) and I am always pleased with the result. Last edited by JOReynolds; 11th September 2015 at 08:50 AM. |
#13
|
|||
|
|||
I have had blotchiness in the past but not film after film after film that has made me reconsider my technique. I will bear prerinsing in mind should it happen again.
Thanks all. |
#14
|
|||
|
|||
If I recall what Ilford has said on another forum i think it was that it thinks that a pre-soak doesn't add anything but equally it does no harm
Mike |
#15
|
|||
|
|||
Just dug out some comments I have on an email exchange between me and Harman's tech support a couple of years back when I had some odd effects with Pan-F attributed to prerinsing:
"I acknowledge your saying you have always presoaked with FP4+ and attained good results - despite you also acknowledging our advice to not presoak. It is though more likely/more lucky that you've had no problems with FP4+ because we certainly do encounter problems - and I am also aware of other users who presoak also have problems of mottle/increased grain size and unevenness when they do pre-soak. Likewise, I have known people presoak our films for years (perhaps as you with FP4+) - and have no problems. Or people who presoak for years with no problems - and then all of a sudden, doing the same procedures - they suddenly have a batch/film thats problematic/mottley/uneven. " They also said that as colour film is developed at a much higher temp they are robust and so are more or less immune to any problems with prerinsing. |
#16
|
|||
|
|||
DaveP, thanks for this.
Well, that clears it all up then ! David |
#17
|
||||
|
||||
Quote:
Quote:
Bests, David. www.dsallen.de
__________________
David, d.s.allen, fotograf dsallenberlin@gmail.com http://dsallen.carpentier-galerie.de |
#18
|
|||
|
|||
What Simon says is clearly at odds with what the tech people say. Given they are the ones dealing with customer enquiries day in day out I'd be inclined to believe what the tech folk say.
|
#19
|
|||
|
|||
Quote:
There may be differences of opinion within Ilford's tech dept as well but on balance enough of them or at least the head of the tech dept gave Simon Galley the OK to make the statement he did Mike |
#20
|
|||
|
|||
Obviously we can all make our minds up who to listen to. Personally I'll listen to the tech folk not the PR guy. Especially since the tech's candid pronouncement of seeing plenty of issues caused by prerinsing would be a frankly bizarre thing to make up if it wasn't true.
|
Support our Sponsors, they keep FADU free: AG Photographic The Imaging Warehouse Process Supplies RH Designs Second-hand Darkroom Supplies |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
paterson orbital pre-soak calculator? | gavinR | Darkroom | 2 | 24th February 2015 06:45 PM |
Pre-soak | Dave miller | Monochrome Film | 31 | 9th November 2008 09:52 AM |
With or Without Pre-soak? | Bill | Articles | 7 | 22nd October 2008 06:41 AM |