Pre-wash of film - good or bad???

[joho]

I was thinking about this, when I read this on the last page[8] FOMA 200 film Thread.

So, I posted this new thread here ??.


as stated by Interneg.....[Chlororesorcinol as an anti-dichroic stain agent (which are now mostly incorporated in emulsions)....... Sooooo, if by washing out the dyes all together in pre wash of the film when developing the film do we recreate a condition for chemical FOG !??

[pchong]

I have been doing prewash. No issues so far.

[JLNims]

I'm not using FOMA, but I alway prewash and have never had a problem. I also prewash my color negative sheets before C41 and no problems there either. Maybe just with FOMA and possible other brands from that area in Europe? No offense Europe!!

[Drew Wiley]

I ALWAYS presoak. All films, all developers. No exceptions. No issues unless I don't do it!

[Andrew O'Neill]

Films that have a messy dyes, get a prewash. Those that don't, don't. I never prewash Ilford films.

[darr]

I always prewash. If you don't, all the dyes get mixed in with the developer plus what other crap might be on the film from handling it, etc. In 30+ years of developing film, always prewashed with no problems.

[Vaidotas]

It’s understandable beneficion of presoak keeping in mind antihalation dyes.
But there must be more technical explanation how developer works in two different aproaches.
I never presoak for short developing times and doing presoaking for dilluted developers with good results, but I have no arguments to prove this routine.

[Lachlan 717]

There is more to this than removing antihalation layer(s) - it is also to reduce “developer shock”.

This is especially true for larger formats where the addition of developer to the emulsion potentially causing uneven initial development.

The wet film can help to reduce this effect.

I use this for all my formats (now only 8x10 and especially 7x17) as there is increased time for the developer to reach the long end of the sheet.

[Tin Can]

i trust only Andrew as he has excellent show and tell

Films that have a messy dyes, get a prewash. Those that don't, don't. I never prewash Ilford films.

[ic-racer]

Not every choice has a "good" and "bad." For example putting the left sock on first, "good" or "bad?"