Paterson System 4 question

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Sverre Aurstad
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Paterson System 4 question

Post by Sverre Aurstad » Tue Feb 06, 2018 3:05 am

Hi
Steve Anchell recommends using a Paterson System 4 developing tank for one 120 or two 35mm. It's tempting to go for larger versions to be able to develop two or more 120 films. What are the pros and cons of using larger Paterson tanks?
Thanks for any advice on this!
Regards,
Sverre

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sanchell
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Re: Paterson System 4 question

Post by sanchell » Tue Feb 06, 2018 11:10 am

Sverre, I recommend Paterson System tanks, regardless of size. I have, and use Paterson tanks from 2-35mm reels to 8-35mm reels. Just make certain you don't overload them. Remember, it is important to have as near 350ml of working developer per roll as possible - more being better.
Do it in the Dark,

Steve Anchell

tim.bowman
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Re: Paterson System 4 question

Post by tim.bowman » Tue Feb 06, 2018 12:16 pm

That 350ml per roll recommendation is to avoid exhausting your developer, correct?

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sanchell
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Re: Paterson System 4 question

Post by sanchell » Tue Feb 06, 2018 1:05 pm

Partly. It is also to make certain you achieve full and complete development on every frame regardless of how much exposure was received.
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Steve Anchell

Sverre Aurstad
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Re: Paterson System 4 question

Post by Sverre Aurstad » Wed Feb 07, 2018 2:59 am

Thanks Steve and also Tim for your comment. Then I will go for a 1 liter tank and develop two 35mm or two 120. I'm using DD-X 1+9 dilution and I hope 1 liter of dilution will be sufficient for the job.

I also do 8x10 and I have sold my JOBO/Expert Drum equipment to scale down and do manual developing. I have tried developing 4 sheets (one after the other) in one liter of DD-X 1+9 dilution in trays (with brush). The negs look fine but I guess they would even be better with only two or three 8x10 negs per liter.

Regards,
Sverre

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sanchell
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Re: Paterson System 4 question

Post by sanchell » Wed Feb 07, 2018 9:58 am

The standard dilution for DD-X is 1:4. You are getting good results with 1:9?
Do it in the Dark,

Steve Anchell

Sverre Aurstad
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Re: Paterson System 4 question

Post by Sverre Aurstad » Wed Feb 07, 2018 10:50 am

The 1+9 ditution is recommended for JOBO processors and since tray development with a brush also is a sort of continous agitation I wanted to give it a try. I started with 10 min which is a little short but neg looks good so next try will be 12 min. Film for this is 8x10 HP-5. Looking foreward to any comments you may have, Steve! I have three of your books, an early version and the latest version of the Cookbook and also The Film Developing Cookbook.

Regards,
Sverre

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