For those who do a Presoak, what's your time?

[Pirate]

The current developer I'm using recommends a 1 minute presoak and that's what I use with good results.

I'm just curious for anyone who has experimented with longer Presoaks, what happened- good or bad?

Thanks.

 

[Chris101]

Water in, 3 inversions, water out.

 

[cjbecker]

2 mins ish.

 

[Vics]

A minute or so. No inversions.

 

[benmacphoto]

I've alway just done a quick pre soak. Fill the tank once and empty it, then developer goes right in.
Never have had a problem, or noticed a difference in doing a longer pre soak.

 

[f16sunshine]

Careful you might wake a monster with this thread. 😀
I still pre-soak 1 minute or so. Have had great success over the years doing so.
My understanding is that a certain film manufacturer who has no business sense has changed their position on pre-soak methods. YMMV as does mine.

 

[Dylan Hope]

I do a pre-soak just in case. Upper limit is a minute, lower is about 30 seconds. One late night I considered leaving it to soak until morning (10-ish hours), but thought better of it. Within reason though, I imagine the soak time doesn't really matter a whole lot, because once film is wet, it's wet. That said, I haven't experimented yet 😉

 

[R.MacDonald]

What I usually do is fill the tank with water, get my chemicals ready and then dump it out. It's been working so far🙂

 

[bob338]

Jobo, 5 minutes.

 

[George Bonanno]

If it's roll film it's totally unnecessary. A waste of time, effort and materials. However if you're processing (leafing) multiple sheets of film in trays than, yeah, it's mandatory.

Where do you guys come up with this stuff ?

 

[bob338]

Where do you guys come up with this stuff ?

Jobo manual.

 

[filmfan]

I only pre-soak when stand processing with Rodinal 1+100. Otherwise, I don't bother.

 

[Chris101]

...
Where do you guys come up with this stuff ?

35 years of experience doing trial and error type experimentation.

 

[canetsbe]

Doesn't 120/220 film require a bit longer pre-wash due to the bluish-gray layer of "dye" or whatever it is that comes off? Or does it not matter?

 

[kode]

I pour some room temperature water in the tank, then I let it sit, with the occasional agitation while I mix the developer and set everything up. I don't exactly keep track off how long that usually takes. Seems to do well in getting the anti-halation layer out of even the tmax films, and the film gets a temperature closer to room temperature rather than fridge temperature.

 

[john_s]

......Where do you guys come up with this stuff ?

Experience. A prerinse prevents me getting some faint discs of slightly lower density (dark circles in the print). This is with 120 Neopan.

 

[ooze]

2 changes of water, 1 minute each, so a total of about 2 minutes. The main purpose for me is to bring the tank interior to processing temperature.

 

[sniki]

2 minutes standing.

 

[djcphoto]

One minute, with no agitation.

 

[sepiareverb]

Where do you guys come up with this stuff ?

Testing. I use it for several films: the Adox/Efke 25 and the Rollei Ortho. I leave out the pre-soak only when I want to get airbells.

My time is 30 seconds with agitation.