WOW!!! The power of Pot Ferri

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tezzasmall

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Wow!!! is the first word that came out of my mouth after the first use by myself of Pot Ferri for bleaching back, on Monday just past.

I spent some time in the darkroom on Sunday, printing up the latest round of postcards for exchange number 43. I thought all was fine, after I viewed the test strips and the final cards under a daylight bulb in the darkroom and then the bathroom light whilst they were in the wash.

I can only put it down to the artificial lighting, and my tired eyes on the Monday, but the next day when I viewed the cards, which were now dry, I couldn't believe how lifeless they looked.

I know all about dry down etc. but the prints lacked any highlights, which were all light-ish grey.

At first I thought that I would have to reprint them all, or maybe bleach them right back (as I have Pot Ferri and Hypo from toning experiments) and then snatch them from the redevelopment, in the hope of getting a better set of prints.

Over a mug of coffee, I decided to read bits of Tim Rudman's printing course book and for the first time, thought that I would have a go with lightening the prints slightly in a bath of Pot Ferri. First I thought of using a brush on certain parts but after reading, I read a passage that says (something like) that some photographers regularly over print slightly and then put the prints through a Pot Ferri solution. Then there were the various formulas, all talking about making a litre of this and a litre of that...

Finally I read another bit of text somewhere (in the Darkroom Cookbook?) that says to use one half of a teaspoon of Pot Ferri in 200ml of water.

Well, the transformation after putting a DRY print (so as to affect the highlights first and mainly overall) into the solution for just 30 seconds amazed me.

I still have the enlarger set up in the correct position and I keep notes of all my printing, so next time I'm in the darkroom, I'm going to try and print a card again with slightly less exposure (I use an RH Analyser.) I am going to do this as I am curious to see if I can get a similar print as achieved, or whether I should routinely over expose from now on and bleach back slightly.

I can't put a print or two up for you to see the difference as they have only just been put in the post and I don't want to ruin the effect for people receiving prints through the post, unseen elsewhere.

So, to finish, does anyone do the above regularly?

Many thanks.

Terry S
 
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4season

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I used to apply potassium ferricyanide with a small paintbrush to areas of the print which looked a little bit muddy, and the effect was magical, really made the details "pop". Never though to immerse the whole print, but sure, I don't see why not. Have also worked over negatives in this manner - great if you want to see glowing filaments in your light bulbs!
 
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tezzasmall

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Don't forget to re-fix!

Oh yes. I forgot to say. After each print looks about right I put it into another tray of water, where each print was agitated for about 30 seconds. To finish them off I put them in another tray containing a nice fresh solution of Hypo for one minute = and NOT a fast fixer. I'm presuming one has to do this as modern faster fixes may bleach a little more from the prints, which is something we don't want to do! :smile:

Terry S
 

john_s

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Wow!!! is the first word that came out of my mouth after the first use by myself of Pot Ferri for bleaching back, on Monday just past
.........
So, to finish, does anyone do the above regularly?

Many thanks.

Terry S

Yes. I haven't been very good at adjusting for dry down, partly because my darkroom use is not regular. But the quick bleach that Tim Rudman calls "sparkle bath" solves all that. Kodak R-4a proportions of ferri and plain hypo
https://www.photrio.com/forum/threads/will-the-real-farmers-reducer-formula-please-stand-up.137649/

is recommended by TR with the proviso that it might be too fast and can be diluted. (But if it's very diluted the action is different in that it doesn't just act on the highlights.) TR recommends about 10 or 15 seconds immersion with agitation then prompt rinsing. Repeat if necessary.

I do it on dry Fibre prints routinely.
 
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