E-6 and C-41 Processing for Beginners

[ltuuri]

Quick link

http://www.weatherscapes.com/techniques.php?cat=general&page=processing

 

[papo]

Yield of working solutions

Hi all and thanks for an interesting thread.
I also would like to attempt my first C41 development soon.
I'd like to ask the experienced about the yield of the working solutions.
I have the Colortec 41 set for one litre.
The processing instructions say that: "Maximum yield [i.e. 16 low speed CN films] is achieved only by putting through at least 4 CN-films/6 APS films at a time in at least 1,0 litre."

Why should the films be developed 4 at a time? Isn't developing 4 films at a time the same as developing 4 films one after another in the same volume of working solutions?

Part preparation is possible with the set.

So if I make 1/2 litre of working solutions, will I be able to develop 8 films processing 2 films at a time (prolonging the dev time correspondingly)?

Thanks for any good tips on how to proceed.
Pavel

 

[dslater]

Why should the films be developed 4 at a time? Isn't developing 4 films at a time the same as developing 4 films one after another in the same volume of working solutions?

Thanks for any good tips on how to proceed.
Pavel

Not really - if you do it this way, then the first roll gets fresh developer, the second used developer - the third even more used developer and the fourth gets even more used developer.
When you put them in all at once, then all 4 roll go into fresh developer and use it up at the same rate.